I have used Google for login and register new users via Social Login add-on successfully, but since about a month we have the below error while trying to login:
"This app isn't verified. This app hasn't been verified by Google yet. Only proceed if you know and trust the developer."
I contacted Google support. They recommend using Sign In Scopes instead and refer to this page to understand why they recommend to not use https://www.googleap...auth/plus.login.