I noticed one of my scripts stopped working and was trying to debug. I couldn't get anything to work. So I created a totally blank spreadsheet and a new script and I am still getting this error:
I am not sure where to go from here. I found a way to request verification for a project, however, I want to ask other first to figure out what is going on. Is there a quota that I have missed?
Best Answer
Maybe your Google regular/commercial account reached a quota
From OAuth API Verification FAQ