Hi there,
I have a simple form with a single product that costs €85.00. When I try and use PayPal Checkout, using the form total as the amount to charge in the following PayPal screen the total amount to charge is €0.01 which is obviously no where near the correct amount.
Just posting this here in case it helps someone else, but I had this problem too and it was because AJAX was enabled. I had to disable it when embedding the form and it worked after that.