Not sure why it wouldn't work for you Manorton. What browser are you using? Any blocking software? Did you try logging in with the email address that you used to register with on the other site(s)?
[Edit] Well, you just went from a regular registered user to a premium user, so I'd say that yes, you got them linked now.
Either way, glad to see you here. Glad to see everyone that's here. This is a fantastic start for the community, especially considering how little we actually know of what Trion is going to give us access to.