Hmm. Not sure if all the bugs were out of the system back then. Even if they were, it's possible the setup e-mails weren't quite caught up with the new way of things.
Still! After having time to review the situation (didn't have time during my previous post there, hadda go to work), I can think of a couple of things which might have happened.
The first and most obvious would be, was your account actually activated yet? It takes about a week for your account to go live after you've signed up for it, as should be mentioned in the sign-up e-mail.
The second and more probable would be, did you actually register for a forum account, or just for a comic account? 'Cause it's your forum account name and password that gets you on the forums and opens the new site admin, not your comic account. Once you get in there, then you use your comic account name and password to tie the comic account to the forum account. This is done for two reasons. First, it makes people definitely aware of the forums, which is where you'd get all the important news, information, and support for CG. And second, it allows people to manage multiple comic accounts more easily. I log into the site admin as Jim North (my forum account), for example, and both rotd and g4g (my comic accounts) are sitting there ready and waiting to be fiddled with. With the old site admin, you'd have to log out and log back in again each time you wanted to switch from one to the other.
Which, yah, the old site admin still works even now, despite all the "depreciated" notes on it. In fact, up until now, I was still using it because the new site admin would unmark all of my new posts on the forums when I logged out. But thanks to this little chat we're having I've found that they fixed that problem, so it's new site admin all the way for me!
Now, concerning support . . . having taken a look at the CG website, I can see that they've got STrRedWolf listed as their info contact, and there's your problem. Wolf is an idiot. You're rather better off having not gotten an answer back from him. The person you would've wanted to talk to was Lady Kisai, tho' she'd probably be late getting back to you too since she shoulders a hell of a lot of the burden at CG. Primary support is through the forums, tho'. Once you manage to get on there, support is most definitely non-non-existent.
Now, unless they've done a purge recently (I don't quite remember how recent the last one was, myself), your account may still be active there. If this post helps you get in there, you could always go and use it as a mirror for your WCN site.