problem in activate account

problem in activate account

Hello. I've deleted an account yesterday in order to re-create it changing the email. The account was profesor.zgz, but when I try to create it again, the system tells me that the username is not available. I believed that if I deleted an account, I would create it some time later.

I have the same problem when I try to create new account using my Gmail email account (again zoho tells me that the email already exist), because I don't like log in with it (I prefer create a Zoho account).

What can I do?