I had the same problem myself. Couldn't download anything. The script said a forum account was created in my chosen username (tvfacts) but it wasn't.
Someone might want to check that out.
I can download from this account, but not sure if I should be able to.
try turning off internetdownloadmanager , and use IE 32 bit, it worked for me, I got this going, but still no idea about that "not paid" error". I think its visual bug because I can use the client to log in.