I can't sign in

Hello,
 
I can’t sign in with my e-mail and if i click forgot password it says that my e-mail is not registered. I want to log in because i want to ask something. I want to ask if i need to swap my CAS tokens? My CAS tokens are on a ledger nano and i have never taken them off.
 
My e-mail adres is paykar8@hotmail.com