facebook api configeration

Project Description:
i am having some problem with my Fregister process since this facebook feb6th 2013 breaking news.
basically, when a member clicks on the fregister tab, he gets the fb login box.
he manages to login and the regsitration form gets prefilled with his info.
then the member adds the rest of the fields manually in the form and presses the register button.
another fb pop up opens asking the member to continue if he wants to submit this info or to undo and abort if he doesn't want to.
if the member clicks the continue button, the registration form should get submitted and the member should get a last page that tells them that they have registered successfuly.
the problem is happening when the members fills the form and presses register. the page goes to facebook.... member presses continue .... BUT the form does not get submitted..they dont go to the last page.

earlier the f register process was working fine but after the 6th feb 2013 breaking news update from facebook, it stopped working.
need someone with a great knowledge of facebook api integration and social engine knowledge to correct the issue at a really fast pace?

please see the attached pdf file