diff --git a/Gemfile b/Gemfile
index 9924dce..baf0247 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 
 gem 'quickbooks-ruby'
-gem 'oauth2', '1.4.7'
+gem 'oauth2'
 gem 'roxml'
 gem 'nhtsa_vin'
 gem 'will_paginate'
diff --git a/LICENSE b/LICENSE
index 5ecf62e..ce662ac 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2016 - 2022 Rick Barrette
+Copyright (c) 2016 - 2023 Rick Barrette
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index 06e0968..51ae0a2 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,10 @@ The goal of this project is to allow Redmine to connect with Quickbooks Online t
 
 Note: Although the core functionality is complete, this project is still under development & the master branch may be unstable. Tags should be stable and are recommended
 
-Use tags Version 1.0.0+ for Redmine 4+ and Version 0.8.1 for Redine 3
+Use tags for the following Redmine Versions
+* Version 2.0.0+ for Redmine 5+
+* Version 1.0.0+ for Redmine 4+ 
+* Version 0.8.1 for Redine 3
 
 #### Features
 * Issues can be assigned to a Customer via drop down in the edit Issue form
diff --git a/app/controllers/customers_controller.rb b/app/controllers/customers_controller.rb
index fcb7142..dae292c 100644
--- a/app/controllers/customers_controller.rb
+++ b/app/controllers/customers_controller.rb
@@ -36,7 +36,7 @@ class CustomersController < ApplicationController
   autocomplete :customer, :name, :full => true, :extra_data => [:id]
 
   def allowed_params
-    params.require(:customer).permit(:name, :email, :primary_phone, :mobile_phone, :phone_number)
+    params.require(:customer).permit(:name, :email, :primary_phone, :mobile_phone, :phone_number, :notes)
   end
 
   # getter method for a customer's vehicles
@@ -93,6 +93,10 @@ class CustomersController < ApplicationController
       @billing_address = address_to_s(@customer.billing_address)
       @shipping_address = address_to_s(@customer.shipping_address)
       @closed_issues = (@issues - @issues.open)
+      @hours = 0
+      @closed_hours = 0
+      @issues.open.each { |i| @hours+= i.total_spent_hours }
+      @closed_issues.each { |i| @closed_hours+= i.total_spent_hours }
     rescue 
       render_404
     end
@@ -111,7 +115,7 @@ class CustomersController < ApplicationController
   def update
     begin
       @customer = Customer.find_by_id(params[:id])
-      if @customer.update_attributes(allowed_params)
+      if @customer.update(allowed_params)
         flash[:notice] = "Customer updated"
         redirect_to @customer
       else
@@ -214,14 +218,14 @@ class CustomersController < ApplicationController
   # format a quickbooks address to a human readable string
   def address_to_s (address)
     return if address.nil?
-    string = address.line1
+    string = address.line1 if address.line1
     string << "\n" + address.line2 if address.line2
     string << "\n" + address.line3 if address.line3
     string << "\n" + address.line4 if address.line4
     string << "\n" + address.line5 if address.line5
-    string << " " + address.city
-    string << ", " + address.country_sub_division_code
-    string << " " + address.postal_code
+    string << " " + address.city if address.city
+    string << ", " + address.country_sub_division_code if address.country_sub_division_code
+    string << " " + address.postal_code if address.postal_code
     return string
   end
 
diff --git a/app/controllers/estimate_controller.rb b/app/controllers/estimate_controller.rb
index cfab872..fd37dd0 100644
--- a/app/controllers/estimate_controller.rb
+++ b/app/controllers/estimate_controller.rb
@@ -14,16 +14,21 @@ class EstimateController < ApplicationController
   
   before_action :require_user, :unless => proc {|c| session[:token].nil? }
   skip_before_action :verify_authenticity_token, :check_if_login_required, :unless => proc {|c| session[:token].nil? }
+
+  def get_estimate
+    estimate = Estimate.find_by_id(params[:id]) if params[:id]
+    estimate = Estimate.find_by_doc_number(params[:search]) if params[:search]
+    return estimate
+  end
   
   #
   # Downloads and forwards the estimate pdf
   #
   def show
-    e = Estimate.find_by_id(params[:id]) if params[:id]
-    e = Estimate.find_by_doc_number(params[:search]) if params[:search]
+    estimate = get_estimate
 
     begin
-      send_data e.pdf, filename: "estimate #{e.doc_number}.pdf", :disposition => 'inline', :type => "application/pdf"
+      send_data estimate.pdf, filename: "estimate #{estimate.doc_number}.pdf", :disposition => 'inline', :type => "application/pdf"
     rescue
       redirect_to :back, :flash => { :error => "Estimate not found" }
     end
@@ -33,11 +38,10 @@ class EstimateController < ApplicationController
   # Downloads estimate by document number
   #
   def doc
-    e = Estimate.find_by_doc_number(params[:id]) if params[:id]
-    e = Estimate.find_by_doc_number(params[:search]) if params[:search]
+    estimate = get_estimate
     
     begin
-      send_data e.pdf, filename: "estimate #{e.doc_number}.pdf", :disposition => 'inline', :type => "application/pdf"
+      send_data estimate.pdf, filename: "estimate #{estimate.doc_number}.pdf", :disposition => 'inline', :type => "application/pdf"
     rescue
       redirect_to :back, :flash => { :error => "Estimate not found" }
     end
diff --git a/app/controllers/qbo_controller.rb b/app/controllers/qbo_controller.rb
index fd9e625..b3446b7 100644
--- a/app/controllers/qbo_controller.rb
+++ b/app/controllers/qbo_controller.rb
@@ -1,6 +1,6 @@
 #The MIT License (MIT)
 #
-#Copyright (c) 2022 rick barrette
+#Copyright (c) 2023 rick barrette
 #
 #Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 #
@@ -26,7 +26,7 @@ class QboController < ApplicationController
   # Called when the user requests that Redmine to connect to QBO
   #
   def authenticate
-    oauth2_client = Qbo.get_client
+    oauth2_client = Qbo.construct_oauth2_client
     callback = Setting.host_name + "/qbo/oauth_callback/" 
     grant_url = oauth2_client.auth_code.authorize_url(redirect_uri: callback, response_type: "code", state: SecureRandom.hex(12), scope: "com.intuit.quickbooks.accounting")
     redirect_to grant_url
@@ -37,7 +37,7 @@ class QboController < ApplicationController
   #
   def oauth_callback
     if params[:state].present?
-      oauth2_client = Qbo.get_client
+      oauth2_client = Qbo.construct_oauth2_client
       # use the state value to retrieve from your backend any information you need to identify the customer in your system
       redirect_uri = Setting.host_name + "/qbo/oauth_callback/"
       if resp = oauth2_client.auth_code.get_token(params[:code], redirect_uri: redirect_uri)
@@ -47,15 +47,11 @@ class QboController < ApplicationController
         
         # Save the authentication information 
         qbo = Qbo.new
-        qbo.company_id = params[:realmId]
-        
-        # Generate Access Token & Serialize it into the database
-        access_token = OAuth2::AccessToken.new(oauth2_client, resp.token, refresh_token: resp.refresh_token)
-        qbo.token = access_token.to_hash
-        qbo.expire = 1.hour.from_now.utc
+        qbo.update(oauth2_access_token: resp.token, oauth2_refresh_token: resp.refresh_token, realm_id: params[:realmId])
+        qbo.refresh_token!
         
         if qbo.save!
-          redirect_to sync_path, :flash => { :notice => "Successfully connected to Quickbooks" }
+          redirect_to qbo_sync_path, :flash => { :notice => "Successfully connected to Quickbooks" }
         else
           redirect_to plugin_settings_path(:redmine_qbo), :flash => { :error => "Error" }
         end
@@ -145,7 +141,6 @@ class QboController < ApplicationController
       if Qbo.exists?
         Customer.sync
         Invoice.sync
-        QboItem.sync
         Employee.sync
         Estimate.sync
         
@@ -155,6 +150,6 @@ class QboController < ApplicationController
       ActiveRecord::Base.connection.close
     end
 
-    redirect_to :home, :flash => { :notice => "Successfully synced to Quickbooks" }
+    redirect_to :home, :flash => { :notice => "Syncing Quickbooks" }
   end
 end
diff --git a/app/helpers/auth_helper.rb b/app/helpers/auth_helper.rb
index 42b81a2..7959fec 100644
--- a/app/helpers/auth_helper.rb
+++ b/app/helpers/auth_helper.rb
@@ -13,7 +13,7 @@ module AuthHelper
   def require_user
     return unless session[:token].nil?
     if !User.current.logged?
-      render :file => "public/401.html.erb", :status => :unauthorized, :layout =>true
+      render_403
     end
   end
   
@@ -27,14 +27,14 @@ module AuthHelper
   
   def check_permission(permission)
     if !allowed_to?(permission)
-      render :file => "public/401.html.erb", :status => :unauthorized, :layout =>true 
+      render_403
     end
   end
   
   
   def global_check_permission(permission)
     if !globaly_allowed_to?(permission)
-      render :file => "public/401.html.erb", :status => :unauthorized, :layout =>true 
+      render_403
     end
   end
   
diff --git a/app/models/concerns/quickbooks_oauth.rb b/app/models/concerns/quickbooks_oauth.rb
new file mode 100644
index 0000000..9e03a82
--- /dev/null
+++ b/app/models/concerns/quickbooks_oauth.rb
@@ -0,0 +1,80 @@
+#The MIT License (MIT)
+#
+#Copyright (c) 2023 rick barrette
+#
+#Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+#
+#The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+#
+#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+module QuickbooksOauth
+  extend ActiveSupport::Concern
+
+  OAUTH_CONSUMER_KEY = Setting.plugin_redmine_qbo['settingsOAuthConsumerKey']
+  OAUTH_CONSUMER_SECRET = Setting.plugin_redmine_qbo['settingsOAuthConsumerSecret']
+
+  #== Instance Methods
+
+  def perform_authenticated_request(&block)
+    attempts = 0
+    begin
+      yield oauth_access_token
+    rescue OAuth2::Error, Quickbooks::AuthorizationFailure => ex
+      Rails.logger.info("QuickbooksOauth.perform: #{ex.message}")
+
+      # to prevent an infinite loop here keep a counter and bail out after N times...
+      attempts += 1
+
+      raise "QuickbooksOauth:ExceededAuthAttempts" if attempts >= 3
+
+      # check if its an invalid_grant first, but assume it is for now
+      refresh_token!
+
+      retry
+    end
+  end
+
+  def refresh_token!
+    t = oauth_access_token
+    refreshed = t.refresh!
+
+    if refreshed.params['x_refresh_token_expires_in'].to_i > 0
+      oauth2_refresh_token_expires_at = Time.now + refreshed.params['x_refresh_token_expires_in'].to_i.seconds
+    else
+      oauth2_refresh_token_expires_at = 100.days.from_now
+    end
+
+    update!(
+      oauth2_access_token: refreshed.token,
+      oauth2_access_token_expires_at: Time.at(refreshed.expires_at),
+      oauth2_refresh_token: refreshed.refresh_token,
+      oauth2_refresh_token_expires_at: oauth2_refresh_token_expires_at
+    )
+  end
+
+  def oauth_client
+    self.class.construct_oauth2_client
+  end
+
+  def oauth_access_token
+    OAuth2::AccessToken.new(oauth_client, oauth2_access_token, refresh_token: oauth2_refresh_token)
+  end
+
+  def consumer
+    oauth_access_token
+  end
+
+  module ClassMethods
+
+    def construct_oauth2_client
+      options = {
+        site: "https://appcenter.intuit.com/connect/oauth2",
+        authorize_url: "https://appcenter.intuit.com/connect/oauth2",
+        token_url: "https://oauth.platform.intuit.com/oauth2/v1/tokens/bearer"
+      }
+      OAuth2::Client.new(OAUTH_CONSUMER_KEY, OAUTH_CONSUMER_SECRET, options)
+    end
+
+  end
+end
diff --git a/app/models/customer.rb b/app/models/customer.rb
index ce9ba02..1314de8 100644
--- a/app/models/customer.rb
+++ b/app/models/customer.rb
@@ -23,7 +23,7 @@ class Customer < ActiveRecord::Base
   
   # returns a human readable string
   def to_s
-    return name
+    return "#{self[:name]} - #{phone_number.split(//).last(4).join unless phone_number.nil?}"
   end
   
   # Convenience Method
@@ -87,6 +87,13 @@ class Customer < ActiveRecord::Base
     #update our locally stored number too
     update_mobile_phone_number
   end
+
+  # Convenience Method
+  # Sets the notes
+  def notes=(s)
+    pull unless @details
+    @details.notes = s
+  end
   
   # update the localy stored phone number as a plain string with no special chars
   def update_phone_number
@@ -147,16 +154,17 @@ class Customer < ActiveRecord::Base
     #  customers = service.query(query)
     #end
     
-    customers.each do |customer|
-      customer = Customer.find_or_create_by(id: customer.id)
-      if customer.active?
-        if not customer.name.eql? customer.display_name
-          customer.name = customer.display_name
-          customer.id = customer.id
+    customers.each do |c|
+      logger.info "Processing customer #{c.id}"
+      customer = Customer.find_or_create_by(id: c.id)
+      if c.active?
+        if not customer.name.eql? c.display_name
+          customer.name = c.display_name
+          customer.id = c.id
           customer.save_without_push
         end
       else
-        if not customer.new_record?
+        if not c.new_record?
           customer.delete
         end
       end
diff --git a/app/models/employee.rb b/app/models/employee.rb
index efc4a1f..3319558 100644
--- a/app/models/employee.rb
+++ b/app/models/employee.rb
@@ -1,6 +1,6 @@
 #The MIT License (MIT)
 #
-#Copyright (c) 2022 rick barrette
+#Copyright (c) 2023 rick barrette
 #
 #Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 #
@@ -22,10 +22,11 @@ class Employee < ActiveRecord::Base
     
     transaction do
       # Update the item table
-      employees.each { |employee|
-        employee = 	find_or_create_by(id: employee.id)
-        employee.name = employee.display_name
-        employee.id = employee.id
+      employees.each { |e|
+        logger.info "Processing employee #{e.id}"
+        employee = 	find_or_create_by(id: e.id)
+        employee.name = e.display_name
+        employee.id = e.id
         employee.save!
       }
     end
diff --git a/app/models/estimate.rb b/app/models/estimate.rb
index 4d9bf82..541f4bd 100644
--- a/app/models/estimate.rb
+++ b/app/models/estimate.rb
@@ -50,13 +50,13 @@ class Estimate < ActiveRecord::Base
   end
   
   # process an estimate into the database
-  def self.process_estimate(estimate)
-    logger.info "Processing estimate #{estimate.id}"
-    estimate = find_or_create_by(id: estimate.id)
-    estimate.doc_number = estimate.doc_number
-    estimate.customer_id = estimate.customer_ref.value
-    estimate.id = estimate.id
-    estimate.txn_date = estimate.txn_date
+  def self.process_estimate(qbo_estimate)
+    logger.info "Processing estimate #{qbo_estimate.id}"
+    estimate = find_or_create_by(id: qbo_estimate.id)
+    estimate.doc_number = qbo_estimate.doc_number
+    estimate.customer_id = qbo_estimate.customer_ref.value
+    estimate.id = qbo_estimate.id
+    estimate.txn_date = qbo_estimate.txn_date
     estimate.save!
   end
 
diff --git a/app/models/invoice.rb b/app/models/invoice.rb
index e007354..8f72b32 100644
--- a/app/models/invoice.rb
+++ b/app/models/invoice.rb
@@ -70,26 +70,26 @@ class Invoice < ActiveRecord::Base
   end
   
   # processes the invoice into the database
-  def self.process_invoice(invoice)
-    logger.info "Processing invoice #{invoice.id}"
+  def self.process_invoice(i)
+    logger.info "Processing invoice #{i.id}"
 
     # Load the invoice into the database
-    invoice = Invoice.find_or_create_by(id: invoice.id)
-    invoice.doc_number = invoice.doc_number 
-    invoice.id = invoice.id
-    invoice.customer_id = invoice.customer_ref
-    invoice.txn_date = invoice.txn_date
+    invoice = Invoice.find_or_create_by(id: i.id)
+    invoice.doc_number = i.doc_number 
+    invoice.id = i.id
+    invoice.customer_id = i.customer_ref
+    invoice.txn_date = i.txn_date
     invoice.save!
 
     # Scan the private notes for hashtags and attach to the applicable issues
-    if not invoice.private_note.nil?
-      invoice.private_note.scan(/#(\w+)/).flatten.each { |issue|
+    if not i.private_note.nil?
+      i.private_note.scan(/#(\w+)/).flatten.each { |issue|
         attach_to_issue(Issue.find_by_id(issue.to_i), invoice)
       }
     end
     
     # Scan the line items for hashtags and attach to the applicable issues
-    invoice.line_items.each { |line|
+    i.line_items.each { |line|
       if line.description
         line.description.scan(/#(\w+)/).flatten.each { |issue|
           attach_to_issue(Issue.find_by_id(issue.to_i), invoice)
diff --git a/app/models/qbo.rb b/app/models/qbo.rb
index 09f3515..66c9984 100644
--- a/app/models/qbo.rb
+++ b/app/models/qbo.rb
@@ -10,85 +10,43 @@
 
 class Qbo < ActiveRecord::Base
   unloadable
-  validates_presence_of :token, :company_id, :expire
-  serialize :token
-
-  OAUTH_CONSUMER_KEY = Setting.plugin_redmine_qbo['settingsOAuthConsumerKey']
-  OAUTH_CONSUMER_SECRET = Setting.plugin_redmine_qbo['settingsOAuthConsumerSecret']
-  
-  #
-  # Getter for quickbooks OAuth2 client
-  #
-  def self.get_client
-    oauth_params = {
-     site: "https://appcenter.intuit.com/connect/oauth2",
-     authorize_url: "https://appcenter.intuit.com/connect/oauth2",
-     token_url: "https://oauth.platform.intuit.com/oauth2/v1/tokens/bearer"
-    }
-    return OAuth2::Client.new(OAUTH_CONSUMER_KEY, OAUTH_CONSUMER_SECRET, oauth_params)
-  end
-  
-  #
-  # Getter for oauth consumer
-  #
-  def self.get_oauth_consumer
-    # Quickbooks Config Info
-    return $qb_oauth_consumer
-  end
+    
+  include QuickbooksOauth
 
   # 
   # Get a quickbooks base service object for type
   # @params type of base
   #
   def self.get_base(type)
-    # lets getnourbold access token from the database
-    oauth2_client = get_client
     qbo = self.first
-    access_token = OAuth2::AccessToken.from_hash(oauth2_client, qbo.token)
 
-    # check to see if we need to refresh the acesstoken
-    if qbo.expire.to_time.utc.past?
-      puts "Updating access token"
-      new_access_token_object = access_token.refresh!
-      qbo.token = new_access_token_object.to_hash
-      qbo.expire = 1.hour.from_now.utc
-      qbo.save!
-      access_token = new_access_token_object
-    else
-      puts "Using current token"
+    qbo.perform_authenticated_request do |access_token|   
+      # build the reqiested service
+      case type
+        when :time_activity
+          return Quickbooks::Service::TimeActivity.new(:company_id => qbo.realm_id, :access_token => access_token)
+        when :customer
+          return Quickbooks::Service::Customer.new(:company_id => qbo.realm_id, :access_token => access_token)
+        when :invoice
+          return Quickbooks::Service::Invoice.new(:company_id => qbo.realm_id, :access_token => access_token)
+        when :estimate
+          return Quickbooks::Service::Estimate.new(:company_id => qbo.realm_id, :access_token => access_token)
+        when :employee
+          return Quickbooks::Service::Employee.new(:company_id => qbo.realm_id, :access_token => access_token)
+        when :item
+          return Quickbooks::Service::Item.new(:company_id => qbo.realm_id, :access_token => access_token)
+      else
+        return nil
+      end
     end
-    
-    # build the reqiested service
-    case type
-      when :item
-        return Quickbooks::Service::Item.new(:company_id => qbo.company_id, :access_token => access_token)
-      when :time_activity
-       return Quickbooks::Service::TimeActivity.new(:company_id => qbo.company_id, :access_token => access_token)
-      when :customer
-        return Quickbooks::Service::Customer.new(:company_id => qbo.company_id, :access_token => access_token)
-      when :invoice
-        return Quickbooks::Service::Invoice.new(:company_id => qbo.company_id, :access_token => access_token)
-      when :estimate
-        return Quickbooks::Service::Estimate.new(:company_id => qbo.company_id, :access_token => access_token)
-      when :account
-        return Quickbooks::Service::Account.new(:company_id => qbo.company_id, :access_token => access_token)
-      when :employee
-        return Quickbooks::Service::Employee.new(:company_id => qbo.company_id, :access_token => access_token)
-    else
-      return access_token
-    end
-   
-  end
-   
-   # Get the QBO account
-  def self.get_account
-    first
   end
   
   # Updates last sync time stamp
   def self.update_time_stamp
+    date = DateTime.now
+    logger.info "Updating QBO timestamp to #{date}"
     qbo = Qbo.first
-    qbo.last_sync = DateTime.now
+    qbo.last_sync = date
     qbo.save
   end
   
diff --git a/app/views/customers/show.html.erb b/app/views/customers/show.html.erb
index 2a7689f..af5d5b7 100644
--- a/app/views/customers/show.html.erb
+++ b/app/views/customers/show.html.erb
@@ -35,8 +35,8 @@
   </div>
 
 <br/>
-<h3><%=@issues.open.count%> <%=t(:label_open_issues)%>:</h3>
+<h3><%=@issues.open.count%> <%=t(:label_open_issues)%> - <%=@hours.round(1)%> <%=t(:label_hours)%></h3>
 <%= render :partial => 'issues/list_simple', locals: {issues: @issues.open} %>
 
-<h3><%=@closed_issues.count%> <%=t(:label_closed_issues)%>:</h3>
+<h3><%=@closed_issues.count%> <%=t(:label_closed_issues)%> - <%= @closed_hours.round(1)%> <%=t(:label_hours)%></h3>
 <%= render :partial => 'issues/list_simple', locals: {issues: @closed_issues} %>
diff --git a/app/views/estimates/_search.html.erb b/app/views/estimates/_search.html.erb
index 4567ab7..7a1a418 100644
--- a/app/views/estimates/_search.html.erb
+++ b/app/views/estimates/_search.html.erb
@@ -1,4 +1,4 @@
-<%= form_tag("/qbo/estimate/doc", :method => "get", id: "est-search-form") do %>
+<%= form_tag(estimate_doc_path, :method => "get") do %>
     <%= text_field_tag :search, params[:search], placeholder: t(:label_search_estimates), :autocomplete => "off" %>
     <%= submit_tag t(:label_search), :formtarget => "_blank" %>
 <% end %>
diff --git a/app/views/public/401.html.erb b/app/views/public/401.html.erb
deleted file mode 100644
index 50381b8..0000000
--- a/app/views/public/401.html.erb
+++ /dev/null
@@ -1 +0,0 @@
-<%= flash.now[:error] = t(:label_401) %>
diff --git a/app/views/qbo/_settings.html.erb b/app/views/qbo/_settings.html.erb
index 5a3a733..753143a 100644
--- a/app/views/qbo/_settings.html.erb
+++ b/app/views/qbo/_settings.html.erb
@@ -58,8 +58,13 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
     </tr>
 
      <tr>
-       <th><%=t(:label_oauth_expires)%></th>
-       <td><%= if Qbo.exists? then Qbo.first.expire end %>
+        <th><%=t(:label_oauth_expires)%></th>
+        <td><%= if Qbo.exists? then Qbo.first.oauth2_access_token_expires_at end %>
+      </tr>
+      
+      <tr>
+        <th><%=t(:label_oauth2_refresh_token_expires_at)%></th>
+        <td><%= if Qbo.exists? then Qbo.first.oauth2_refresh_token_expires_at end %>
      </tr>
 
   </tbody>
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 48768cb..8001ac6 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -25,7 +25,6 @@ en:
   label_search_estimates: "Search Estimates"
   label_search: "Search"
   label_estimates: "Estimates"
-  label_401: "Not Authorized"
   warn_ru_sure: "You sure?"
   label_delete: "Delete"
   label_edit: "Edit"
@@ -87,4 +86,6 @@ en:
   label_billed_success: "Successfully Billed "
   label_billing_error: "Cannot bill without a customer assigned"
   label_qbo_sync_success: "Successfully synced to Quickbooks"
+  label_hours: "Hours"
+  label_oauth2_refresh_token_expires_at: "Refresh Token Expires At"
   
\ No newline at end of file
diff --git a/config/routes.rb b/config/routes.rb
index 9134c3d..ee9844e 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -20,7 +20,7 @@ post 'qbo/webhook', :to => 'qbo#webhook'
 
 # Estimate & Invoice PDF
 get 'estimates/:id', :to => 'estimate#show', as: :estimate
-get 'estimates/doc/:id', :to => 'estimate#doc', as: :estimate_doc
+get 'estimates/doc/', :to => 'estimate#doc', as: :estimate_doc
 get 'invoices/:id', :to => 'invoice#show', as: :invoice
 
 #manual billing
diff --git a/db/migrate/037_update_qbo_token.rb b/db/migrate/037_update_qbo_token.rb
new file mode 100644
index 0000000..b9bedc2
--- /dev/null
+++ b/db/migrate/037_update_qbo_token.rb
@@ -0,0 +1,22 @@
+#The MIT License (MIT)
+#
+#Copyright (c) 2023 rick barrette
+#
+#Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+#
+#The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+#
+#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+class UpdateQboToken < ActiveRecord::Migration[5.1]
+  def change
+    add_column :qbos, :oauth2_access_token, :text
+    add_column :qbos, :oauth2_access_token_expires_at, :datetime
+    add_column :qbos, :oauth2_refresh_token, :text
+    add_column :qbos, :oauth2_refresh_token_expires_at, :datetime
+    add_column :qbos, :realm_id, :text
+    remove_column :qbos, :company_id
+    remove_column :qbos, :token
+    remove_column :qbos, :expire
+  end
+end
diff --git a/init.rb b/init.rb
index 01dd0c9..dddcbb0 100644
--- a/init.rb
+++ b/init.rb
@@ -1,6 +1,6 @@
 #The MIT License (MIT)
 #
-#Copyright (c) 2022 rick barrette
+#Copyright (c) 2023 rick barrette
 #
 #Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 #
@@ -22,11 +22,11 @@ Redmine::Plugin.register :redmine_qbo do
   name 'Redmine Quickbooks Online plugin'
   author 'Rick Barrette'
   description 'This is a plugin for Redmine to intergrate with Quickbooks Online to allow for seamless intergration CRM and invoicing of completed issues'
-  version '1.1.4'
+  version '2.0.2'
   url 'https://github.com/rickbarrette/redmine_qbo'
-  author_url 'http://rickbarrette.org'
+  author_url 'https://barrettefabrication.com'
   settings :default => {'empty' => true}, :partial => 'qbo/settings'
-  requires_redmine :version_or_higher => '4.0.0'
+  requires_redmine :version_or_higher => '5.1.0'
   
   # Add safe attributes for core models
   Issue.safe_attributes 'customer_id'
diff --git a/lib/pdf_patch.rb b/lib/pdf_patch.rb
index 6c717c7..f6e566b 100644
--- a/lib/pdf_patch.rb
+++ b/lib/pdf_patch.rb
@@ -1,6 +1,6 @@
 #The MIT License (MIT)
 #
-#Copyright (c) 2022 rick barrette
+#Copyright (c) 2023 rick barrette
 #
 #Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 #
@@ -11,7 +11,7 @@
 require_dependency 'redmine/export/pdf'
 require_dependency 'redmine/export/pdf/issues_pdf_helper'
 
-module IssuesPdfHelperPatch
+module PdfPatch
 
   def self.included(base)
     base.send(:include, InstanceMethods)
@@ -253,4 +253,4 @@ module IssuesPdfHelperPatch
   end
 end
 
-Redmine::Export::PDF::IssuesPdfHelper.send(:include, IssuesPdfHelperPatch)
+Redmine::Export::PDF::IssuesPdfHelper.send(:include, PdfPatch)