I've found that it's hard to find information on who to contact about these sorts of things. Normally on sites the policy is to e-mail a staff member for help with registration and other site-related issues, but I have no idea which staff here specialize in that kind of thing (kind of sad after being here for years... ). I tried giving said member a link to where they could find Hinckley's contact info at Brickzone.net, but he hasn't gotten any response via e-mail.
If anyone can help Gatanui solve his particular problem, I'm sure he'd appreciate it greatly (he can probably be contacted most easily through e-mail or Flickr if you give me a name/address I can pass onto him). But also I think the registration form should make it easier to find who to contact if you're having difficulty with registration. It's possible that the answer to the problem has been in front of both of us this whole time, but I haven't seen any obvious solutions.
Thanks in advance for any help on this issue.