Well, I guess the benefit of no support is learning how to do it yourself! In case others come across this issue, I did manage to resolve it. On github, they have an unreleased branch (3.0.1) that moved away from using the Google Plus API to HybridAuth. Replacing my files with these updates solved the issue for me and I no longer have users being warned that they should only login if they know me personally.
https://github.com/miled/wordpress-social-login/tree/791c5f4bca58af94f47cfccaaa6e72839fa0763f
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This reply was modified 5 years, 7 months ago by katsiris. Reason: Marking resolved