Sorry you are having trouble! Here are some reasons you could possibly be receiving an error message:
Error Message: Your Password must have 8 characters.
Please be sure that the password being entered is 8 to 20 characters with no special characters (&%$@*) or spaces.
Error Message: That username is taken.
Please be sure that you are entering a unique public name. Your public name is like your username. If you make a comment or submission, this name will appear on the contest site. It can be made up or your real name. That is up to you. It must be unique though. No two users on this site can have the same public name.
Error Message: For the field labeled 'Email Address' a valid email address is required.
Our system is not recognizing your email address. Please be sure you have entered your email address correctly in both the Email Address and Re-enter Email Address fields.