Hi,
I can help answer your question.
Our Community Event Login, uses a custom login form and typically adding a plugin for social login does not work with it. I am afraid there are no hooks or filters to connect to with our form either.
If you are looking to have social login I would set the Community Events to Allow anonymous submissions so it disables our login check.
Then follow the Themer’s Guide:
https://theeventscalendar.com/support/documentation/events-calendar-themers-guide/
to move the Community Event Form to your theme and add a check there for the logged in user and place a login form that works with the social login.
Does that make sense?