Whenever I am taken to the Paypal payment page after submitting my payment form, I get the error "PayPal cannot process this transaction because of a problem with the seller's website. Please contact the seller directly to resolve this problem." I tested the script locally and also did an IPN simulator transaction and all was well, but I still get this error when I try to test the script with sandbox. I also made sure that "Use merchant email address" was selected with every one of my subscription buttons. Can anyone see any problems with the markup that could cause this? Check out my payment form here. Please note that the hosted_button_id hidden input value is blank by default but is updated whenever the user clicks on a radio button.
