If you are trying to log in and you find that you can't, try entering the letters in your password as uppercase. Once you have logged in you can change your password back to the original case. To do that go to "My Account" and then click on the "Personal Information" tab. Then look for the "Change PIN/Password" link. Select that and then fill out the PIN information.
If that fails you can reset your password by using this page https://www.clevnet.org/node/7.