I have PayPal Smart Buttons set up on my webshop. PayPal payment works normally, but does not work for users who want to pay by Debit or Credit Card.
When all the necessary data is entered and the "Pay Now" button is pressed, the loading starts and the card is authorized. When the PayPal Smart Buttons card is authorized, they are returned to the initial state without any funds being charged.
Some users get an error before authorization, while others return PayPal Smart Buttons to their initial state without any message.