We've tested the scheme quite well and it seems to work fine. Some folks do seem to have trouble with it but after following the instructions they usually are successful.
Once you log in, please go to www.eham.net/user/passwd
and enter a new, higher security, password (characteristics for the new password are described on that page)
You need 4 letters of which at least one must be a capital plus at least one number and at least one special character.
If you think you are following these instructions and still failing please email with the exact phrase of the error message - copy and paste (or better - a screenshot)