http://YOURSITE.COM/index.php?option=com_jfbconnect&task=authenticate.login&provider=facebook
In the Configuration -> Facebook area, can you set the "Show credentials in popup" to "No". That will use a redirection based authentication instead of the normal Facebook popup and may work better.I have an other little problem too. When I try to login for facebook through my mobile the website just refreshes. Google+ is ok but facebook not.
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