How Do I Change the EA account my DA2 is Associated with?

Does anyone know how I can change the EA account my DA2 is associated with. I sent the staff of Parthalan (kinda old,I know) to an email that was not linked to my DA2, so I didn't get it. Does anyone know how I can change it?

P.S. I can't send it to the email that does work, because I don't remember my freaking password.