Hi Frank,

We are talking about two things and doing implementations.
1) donation button of the square on the donation page
2) Book purchase on the button on this page http://dev.miusa.org/resource/brilliant-resilient-photography-book/
I explained above square checkout page will go to square for donation.
The same way I said I created a stripe checkout page for book purchases.In this case of book purchase it will be stripe checkout.
I hope it's clear now.
