The page you link to at the top seems to be working fine for me, and when clicked, the proper Facebook authentication pop-up appears. Is there a certain browser your using that shows this issue?
Also, please note that with JFBConnect, you should disable JomSocial's Facebook integration, as they two can conflict and only one extension should be used to manage Facebook authentication on your site. For more information on JFBConnect/JomSocial integration, see:
www.sourcecoast.com/jfbconnect/docs/thir...ration-for-jomsocial
Thanks,
Alex