In order to reset your password for your Darkfall: Rise of Agon account you need to visit the login page and under the login button click the "Forgot password?" link. Or visit this link - https://www.riseofagon.com/account/password_reset/
Once on the Password Recovery page, simply enter the email registered to your account and press "Reset My Password". An email will be sent to you with instructions on how to reset your password and choose another one for your account.