Google+ Error: invalid_client

In the Google Developer Console area, please click into your project and go to the APIs & Auth -> Consent Screen section. Fill out the details about your app that should be shoen to users when they try to authenticate.

Hopefully, that's all you need to do , but if not, please let me know.

Thanks,
Alex

No problem for the help. I'm glad we could get you going. If you need anything else, please let me know.

Finally, if you haven't already, please consider leaving a rating and review for JFBConnect, or our support, on the Joomla Extension Directory. It certainly isn't required, but is very appreciated:
extensions.joomla.org/extensions/social-...ook-integration/7215

Thanks,
Alex