Problem adding email accounts

I own my domain name, purchased from Network Solutions years ago.

I redelegated it to the Business Catalyst server.

I upgraded to webBasics+ so I could add my own email accounts

When I try to change the email settings I get an error message: "Domain already exists. Please delete all recored associated with this domain before re-adding it."

Do I delete the default URL and then re-add it? Do I delete the "Forwards To" domain also?

Right now, I have NO e-mail!