Chain of Promanthia Registration

[Saizen]

Hello guys,
I bought CoP and installed it onto my computer and registered it under a brand new account that had a free month on it. A while back I deleated a character on a completely different account of mine. I made this character saizen on the account i deleated my old character on and disabled the account i registered CoP on. I want to register CoP on my account with this character on it but i get a Registration ID error. Is there anyway i can get CoP registered on this account with out having to buy the expansion all over again? :sweat: :sweat: :sweat: :confused: