Hi there,
I see you have not had a response from our members to date. Maybe I can help.
I'm not too sure what you mean so I will try give you the best answers. If you are a merchant then this would be the email address which you registered on your account. If you bought something online as a buyer then the merchant email address would be the email which you sent the funds to for your purchase. If I have not answered the question directly please feel free to reach out to us on Twitter or Facebook.
-David R
