Can't create an email account because Zoho thinks it already exists

Can't create an email account because Zoho thinks it already exists

Hi!

I'm trying to create the e-mail " guilherme@rabeloeribeiro.com.br" but it keep saying this account already exists.

Well, it does not... What happened is that when i first entered Zoho, i typed this email at the Sign Up screen (i messed it up, i know)... Then i guess it got registered at Zoho databank and it tryed to send me an email there.

Please, help! My client already made his business card.