I think, if I got the problem corrently, all you have to do is register your new account on the site. This does not mean simply to \"move\" your old character to an email address. You also have to make a new account (I think link may be in the download section) that uses the same email address you \"registered\" with, although I do not think you really registered.
I had the same problem. I couldn\'t log in, although I followed the instructions and \"registered\" my old character with my email address. Then, I went to the site again and found the new user registration link.