Recurring "Using already invited" error

Recurring "Using already invited" error

Hello,

Every time I try to create the following email account:

- contact@onehappywallet.com

I got the next error:

- “User already invited”

I go to « Invitation list » and delete the invitation, but when I try to create the account again, I’ll have the same error message “User already invited”.
Funny thing is I’ve never sent an invitation to that account. 

Could you please help me on this ?

Thanks in advance,