I reactivated a user after two years but it had her old email address. Since she didn't remember her password from two years ago, we tried forget password but she never received the email. I realized that her email changed but when I tried to change her email on her reactivated account it says the new account has that email. how do I delete an unregistered account so I can update her reactivated account with the correct email? I went to "manage all users" to show all unregistered accounts but the account is not showing up.