Nostalrius Begins - Quality wow vanilla realm (1.12)

Hello, i played for a little bit back when server was first released earlier this year, and i forget my login info like my email username and all that junk. So i went to go make a new account but it says "account creation limit reached" or something like that. I really wanna play on this server again but i cant play my old account or make a new one. What can i do to play here again? i need help!

Thanks, Aaron.