Fiitjee — about big bang edge reco registration

Website: fiitjeelogin.com/mobile/NewUser.aspx

In fiitjee mobile regestration portal we cannot write study center code it asked
That if you don't know the study centre code, fill 3 or 4 starting alphabets of the study centre city we are trying to complete the application by writing the code but it seems impossible if we try it shows blank box and also sometimes it shows this exc1:procedure or function 'mreg_getstudycentre' expects parameter '@testcentrecode', which was not supplied.
Plz try to correct i