I had that problem! Did it say "contact fin aid code IA" ? something like that?
So my issue was I used the wrong ID and then correct ID with wrong password to login and my account got locked up.
Make sure you use the ID you received from the fin office! not your HUID from the admission letter.
I called the next morning and she told me it should work now, (not sure if she reset something or it resets by itself the next day).
Good luck!