If you are not being properly redirected to your site after authentication, it's likely caused by one of the following:
* Something in your Google Application is not setup properly. To verify, please go through the
Google Application Setup Guide
and check all your settings are correct.
* Another extension on your site is detecting a social login and performing a redirect. Sometimes templates, plugins or other extensions can have social authentication features that assume any redirection back from Google should be handled by their code, and then they redirect to the wrong place. Please double check that no other extension would be trying to authenticate social users.
Finally, I see you've had a subscription and older version of JFBConnect before. Did this issue only start after upgrading to v9 or is this the first time you're setting up Google authentication?
Thanks,
Alex