FB Login failed

It looks like you're using a 3rd party SEF extension. Please go into the SEF extension and configure it to 'skip' altering any JFBConnect URLs.

I hope that helps,
Alex

Do you have an SEF extension enabled on your site or any other plugin that might cause a redirection? Looking at the developer tools in Chrome, Facebook is returning to index.php?option=com_jfbconnect&task=authenticate.login&provider=facebook&return=Lw==&d4bbac4c3f013e714b1f3829b4b3d7c0=1 but is then being redirected to /component/jfbconnect/?view=loginregister&provider=facebook&return=Lw==

-Melissa