Registered users aren't members?

[Dinocanid]

Yet another problem related to logging in/out/registering. I just had a new member sign up, but they don't have proper access to the site as a member does. Here's what they said:

Hello and this sounds very interesting. I just registered, so it told me, and it said go to manage account or adopt a pet so tried the adopt, but it says that only members can access this are. I logged in and it said successful so tried manage account and again got the only members can access this area thing. My user name/nickname is kithri, the same as here, so if you could please check this as maybe I'm doing something wrong...or it might be bug, thanks.

I checked phpMyAdmin and everything looks fine from there, so I just can't see what's wrong.