I inadvertently signed up for free web hosting (with username: pbhsreddevils) before signing up for free bulletin board (with username: pbhsreddevils). I would like to know if I have the required number of posts for the web hosting. I have made about 9 posts.

I tried to sign up for web hosting but I get a result of:
Sorry, but this username has already been taken.

Does this mean that when I initially signed up for web hosting before the bulletin board that it locked that username and can it be freed when I reach the required number of posts or that someone other than I has actually has registered that username? I tend to lean to the first theory than the second since it is an unusual username.