Hello @zazazyka
Welcome to the PayPal Help Community and thanks for posting your question here!
I see you're looking to change the card used to pay the order placed on Apple. Once the order is placed, you cannot change the payment method. I would suggest you to get the order canceled by contacting the merchant and place the order again by choosing a different card. You can see the merchant's contact information in the activity page by clicking on the payment.
I hope this information helps you,
Bindu
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