When accessing Google Sheets/Drive get error: This App is blocked

How to troubleshoot the error : This App is blocked while trying to access Google Drive/Sheet ?

While trying to access Google Drive/Sheet, below error occurs:

  1. Make sure the Setup was done correctly as per this link
  2. Try with different Authentication types as well and check the behaviour.
  3. Make sure necessary permissions have been given in the Gsuite Application Scope

In most cases, trying with different Authentication methods resolves the issue.