We are unable to retrieve your Facebook account information

Gonna have to ask for site information then, because we're clueless on what could be causing this and it's probably just easier for us to get in and try to determine the cause.

If you could PM us (use the arrow under my name to the left and hit the mail icon) your site name and a super admin username/password, we'll do what we can to determine the cause. If you can also provide us the username of the Joomla user account that is having issues, that will help.

Thanks

We can't, that's why we want to investigate it further. Do you know the username of the Joomla user you created on the demo site? That may help us determine something wrong there.

Jason,
If you're app is brand new, that could be the problem. Initially, when the app is created, it doesn't always propagate to all of Facebook's server's instantly, so when you log in, it may be on one server, but the the other's don't recognize that as a valid login. Usually this clears up in a a day or so (usually sooner). If you're still having the problem though, let us know. Additionally, that user may need to restart their browser to clear any bad cookies that may have been set during that time.

Hope that helps, and hope it just goes away, but if not, we'll do what we can to help,
Alex