i tryed everything again... and dont work..
by the facebook side is everything ok, button works fine, i put the script on my site. whem i click to login they redirect me to my facebook pade to confirm and after this they send me back to my website.... but not logged in...
i´ve check whith my server and cURL SSl is enable by default...
instead of login button... i put "share and like" button... at least they can do that actions on my site...