Is there any way to pass the event registration details to the PayPal Express Checkout with Smart Buttons payment option so the user doesn’t have to type everything in again? If the user wants to pay with credit card it would be nice to be able to have this information there already.
Something to note here is the PayPal Express Checkout with Smart Buttons payment method (just PayPal Smart Buttons for short) has been deprecated in favour of PayPal Commerce.
In short, we are phasing out the payment methods using their (PayPal’s) older integration methods in place of their most recent integration method with the most features.
PayPal Smart buttons was introduced to use the Express checkout buttons (the smart buttons) and Venmo, which PayPal Commerce supports out of the box.