Steps

1. In the same General Configuration, scroll down the sidebar > Go to Users & Security > Click Allowlist.

2. This step varies depending on which version of Google Drive & Confluence you are using:
   
   

   1. For version 2.0.0 and above, enter the following and click Add:
      
      

      1. Expression: https://*.google.com

      2. Type: Wildcard expression

      3. Allow Incoming: True
         
         
         
         

   2. For version 3.0.0 and above, enter the following and click Add:

      1. First entry

         1. Expression:  https://*.google.com

         2. Type: Wildcard expression

         3. Allow Incoming: True

      2. Second entry

         1. Expression:  https://*.googleapis.com

         2. Type: Wildcard expression

         3. Allow Incoming: True

      3. Third entry
         1. Expression: https://oauth2.googleapis.com/token
         2. Type: Exact Match
         3. Allow Incoming: True
         
         
         

         Open