I have created both a facebook APP and a Google API app. I know the Facebook app is fine as Ultimate Facebook has no issues obtaining data. When I review the events it is not populating.
I have reviewed: https://premium.wpmudev.org/forums/topic/facebook-events-not-importing-with-events but reseting and re-authenticating has not helped.
As far as the Google calendar, the return URI is correct. I am not sure what I am missing.