to fix this issue you need to re-connect your GoogleSync with Gheet App. For this follow these steps:
Open inc/gs-api.php file
Change $debug = false; to $debug = true;
Refresh the GoogleSync Setting page and you will Auth button is back, do not click it unless you again change debug to false
We are releasing new version 5.1 shortly, so you can Revoke the Access token and Re-connect again without making any changes in the file.
Secondly, the issue is if IDs are not being pulled due to you have used a different email account to authorize the App and Google Sheets. Make sure you use the same email account for both.
I already changed the email and I’m banzo, but now I get this legend: “Google has not verified this application The application is requesting access to sensitive information from your Google account. You should not use this application until the developer (ceo @ najeebmedia. com) verify it with Google. Advanced settings “