double single login failed

double single login failed

Hello,

One of my user had a problem:

- he created an account on our forum using his personal gmail login system and used his login "foobar" (i use a fake login).
- then we realized that he wanted to login and use the account with his "google app" pro account but he cannot.

He tried to delete his account, i removed his account from my zoho discussion, but when he tries to create a new account with google app login, it says "foobar" already exists.

He tried to add on this foobar account a new email id, but zoho asked for a password... but he never entered a password to zoho since he uses external login system.

I don't know what to do :(