google login Error: redirect_uri_mismatch

Sorry for the delayed response!

I'm not sure why you'd be seeing that error. The new Cloud Console has been fixed and should properly be saving the full callback URL. You shouldn't need to revert to the "Original Console" as some older forum posts recommended.

As for the error, can you take an image of your configuration of your Google application settings? If you're getting to that error, my guess is that all other settings are right, but I just don't know.

Specifically, again, double check your callback url setting. It should be:
Beyond that, my only suggestion would be to try and create a new Google application and re-follow each step of the Google Application configuration guide . There's only been one other time (in 6 months and a lot of users) that that's been necessary, but it did seem to fix the other user. We were never sure if it was an incorrect setting by the user or an issue on Google's part, so I don't know if that's a 'real' solution or not.

I hope that helps get you started, but if not, let me see the picture of your settings and we'll help how we can.

Thanks,
Alex

Awesome! Glad to hear that got you going. Should you need anything else, just 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