I've got the same problem. I've been trying to get the licence key for the last 6 hours, but continue to get a "page not available" error when I click the link.
It's very frustrating. I've emailed customer support to see if they can help, but I'm not holding my breath!
Looks like it's working again... after a few false starts I managed to register. It claims to have sent me my activation file; I now wait with baited breath to see if the email arrives before my interest in Delphi wains!!!