Hello.
I’m also experiencing the same issue for Google Calendar and I’ve tried everything listed in this thread as well as the others and none of the recommendations are helping. Not sure where the issue is hiding.
I’ve followed this document to the best of my ability: https://www.make.com/en/help/app/google-calendar#create-and-configure-a-google-cloud-console-project-for-google-calendar
(see screenshot above)
I’m using the (https://www.integromat.com/oauth/cb/google/) redirect URI as instructed in the linked Make.com guide above, I’ve experimented with others but get an error immediately upon tryin to establish the connection to Google (400 URI mismatch error). Using this URI allows me to make the connect but once I do I get the 403 Insufficient Authentication Scopes error when I actually execute the module.
Lastly, I’ve deleted and re-established the connection multiple times to ensure it’s completely refreshed to no avail. Each time I’ve copied and pasted the Client ID and Client Secret directly from the Console.