FB Authentication Never Completing

I just tested with Chrome and was logged in immediately.

Can you check with whatever browser your using that you don't have any additional security or privacy extensions that may be preventing Facebook from working? Some privacy extensions will completely block a lot of Facebook functionality for privacy reasons.

The other option is to switch the "Show 'login credentials' in Popup" setting in JFBConnect to 'No'. That bypasses Facebook's Javascript authentication (which can be blocked) for redirecting the user directly to Facebook, which usually isn't/can't be blocked.

I hope that helps, but if you have any other questions or thoughts, just let me know.

Thanks,
Alex

That error has been occurring for a few users. It seems to indicate that the "Valid OAuth Redirect URIs" setting in the Facebook app isn't correct. Please go to the Facebook Developer area and go into the Facebook Login -> Settings area. In there, make sure the Valid OAuth Redirect URIs is setup correct for your site. This should have every variation of your domain (http, https, www, non-www, etc) followed by:
index.php?option=com_jfbconnect&task=authenticate.callback&provider=facebook

I hope that helps get you going, but if you continue to have errors, let us know.

Thanks,
Alex

I'm glad to hear you got that going. Should you run into any other issues or need anything else. Please let u sknow.

Thanks,
Alex