This is the sign-in/up page with the package already in the cart. You will need to swap the code in the iframe here for a FitMetrix chunk of code with the product already in the cart. Once you've generated that, just replace the contents of this iframe with new contents.

You must also edit the FB pixel in this page, under ADVANCED.

NOTE: Do NOT make changes to FitMetrix code on main SING UP/IN page!