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iOS issues
How can I edit payment information on iPhone/Mac?
Use the tips when you see the "Invalid Payment Method" error.
Updated 1 week ago
First and foremost, you need to make sure that you have the latest version of iOS or iPadOS or macOS.
Important: All payment information cannot be removed if you have subscriptions, an unpaid balance, or share purchases with your Family Sharing group.
Hope this helps you with your issue!