I've had a look on their forum, and there doesn't seem to be a 'Contacts' page with email addresses. But one thing has occurred to me: I had this problem a year or so ago with another US-based distro (PCLinuxOS). I filled in the registration details but never received the email which was needed to confirm the registration. After some investigation it turned out that emails from that site were being blocked somewhere along the chain, but neither the site admin nor my ISP could find out where or why.
The solution in that case (which became a sticky on their forum) was to register using a GMail/GoogleMail address, because nobody dares to block these. If that's your problem it might be worth trying.