Click on your weight tracker or someone else's and it will take you back to the ticker factory site enter your password and update your information and it will automatically update here.
If you have lost your password you will have to make a new one.
If you did not take all the code with you from the Ticker Factory site... it is easy to leave bits of it behind as I have done it myself when copying it. Now I always test it in preview signature before I save to make sure I have it all.