Hi,
We've also revised some of the archive's code, so you'll need a bit more than a password reset.
I recommend that you begin by clearing your cache and cookies as described here. Then you will need to activate your account under the new code. You can reset your password as part of this process. Just keep in mind that it needs to be 8 letters/numbers long, and is case sensitive.
If you run into any problems, let us know here, or via email to tos_team@adult-fanfiction.org and let us have as much detail as possible about the error, including your browser information.
I hope this helps!