Thank you for the credentials. Looking through the files on your site, it looks as if someone has been editing and / or adding code to the JFBConnect component. Files that are in /components/com_jfbconnect/libraries/provider/facebook/channel directory are directly loaded by JFBConnect. If there are any problems / PHP errors in these files, you will have problems. On your site, there are extra files that are not from us: current_page.php and vgi_page.php. We recommend to remove any files that you've created, especially in any of the channels directories. If you're still having problems after that, we would recommend to do a clean reinstall of JFBConnect.
-Melissa