Usernames cannot contain more than 32 characters and they may only contain upper/lower case
alphanumeric characters (A-Z, a-z, 0-9), dot (.), hyphen (-), and underscore (_).
Passwords must contain between 8 and 32 characters.
WARNING: Please take care to remember your passsword.
Profiles contain no personal information which can be used to prove an account belongs to you.
If you forget your password then account recovery is not possible.
If you are experiencing a technical issue during registration, then you are able to contract Project Euler at bugman_KMB6V@projecteuler.net.