[Eeyore]

May I ask why you need to contact them at all? From my own experience if a member has been approved for retailing their account is grandfathered and they can at any time purchase retailer tags and add space. All you should have to do is scroll down to the bottom left of the screen and click on the "Donate Now" banner. This will bring you to the payment page. I recommend Paypal as you get instant results.