Wish I had the answer to that question, mate. This is about all I can tell you:
I remember that they used to have a different looking website. On this older one, the registration worked properly. About a year ago they totally reworked their website. Now the strange thing is that, ever since they put up the new web site the registration for the game has not worked. What sucks is that there is not one email address given on the site to contact anyone about the problem.
A possible reason for this is that they decided to finally abandon the game forever, but then my question is why in the world did they completely remake their website if they were just going to dump the game? Confounding isn't it.