Dear Dan,
Thanks, have reviewed your version. I am also stuck like sarah, I see the same message from google, using moodle, 3.4, using core oauth2 to authenticate user accounts to login to moodle.
But, there is one thing that is causing a distress, which is using plus.me scope,
for me it is,
Project | Google+ API Name | Version | Method or OAuth Scope |
Moodle (moodle-devexxxxx) | OAuth | N/A |
and on my google api, it is Oauth 2 services and credentials.
Possible to clarify please.