You need to follow following steps :                                                    

  1. Go to Quickbooks Online site and Sign In or Sign Up with a account.                 
  2. Click on create a new app for the accounting of your woocommerce store ( you don’t need to create a new app if you have already a running app for store accounting).                     
  3. Select and open a app for getting production keys.                        
  4. In app dashboard you will get a keys tab , open keys tab.                         
  5. Copy client id form keys panel and put in plugin configuration section client id.                    
  6. Copy Client Secret form keys panel and put in plugin configuration section Client Secret.                      
  7. Put Plugin configuration page URL as quickbooks redirect URL in the keys tab redirect URL section.                         
  8. Select Account type in plugin configuration page.                    
  9. Now click on authenticate button.                        
  10. Now your store is connected to quickbooks online.