[hnuser52395]

Yes, exactly. I kept getting a "Sorry, something went wrong" with no error code when trying to give a third-party app permissions with my (paid!) Google account, and the most probably reason was that my accounts were locked temporarily due to suspicious activity.

There is no information on how long this will last, there is nothing I can do to fix this, and of course, there is no customer support available. I can't even confirm that waiting will actually fix this, as there is no error code. I thought the people at Google would know better.