Thanks for the help, that fix my problem.
Well not full. It depends on what page you register sometimes it redirect good sometimes it redirect to some attachment file??!!

Ok thanks for your time.

My page is http not https.

It works fine everything except redirection. It redirect good first time after "permission check" and give options to chose facebook data (bio,name,email etc) and after click "register" for me (try with couple facebook acc) it bring window with successfully registered and than open facebook page

http://www.forum.pctehno.com/index.php