You are not required to sign up for a new account. All you have to do is, reset your password by entering your Facebook email address that you have used on your first login, through our login page:

Login Shasso

A temporary password shall be sent to your email address associated with your Facebook account (used on your first login), be sure to check your spam/junk folders for it (for gmail, look also in your hidden folders) in case none arrived through your inbox. You may then proceed to update your new password and login through our website. 

Thereafter, you may still continue to login via Facebook Connect should you wish to do so.