I have a problem with registration, because with 2 differents email address, I did not receive email confirmation. So it is impossible for me to complete my registration on WTM.
I had the same problem, I never received the confirmation email. and like You I could login in the forum but not on the site. I solved it by clicking on "forgot password?" so I received a link to change my password (I think I did it a few times) and a few days later I could login and logout.
the bad surprise was that my solved movies where not saved...
by the way, do you have a space in your login name? I had one (it was check norisk) and it never worked like that.