Re: Declined payment methods
This is the Apple Pay Community:
To Add a card to Wallet for use with Apple Pay:
Follow the steps in Apple Support's online article: Set up Apple Pay - Apple Support to verify your card.
If needed: See: If you can't add a card to Apple Wallet to use with Apple Pay - Apple Support
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Else: If you are trying to add a payment method to your Apple ID account for purchases from Apple
Check which payment methods Apple can accept in your country or region:
Payment methods that you can use with your Apple ID - Apple Support
How to: Add a payment method to your Apple ID - Apple Support
or
What to do: If your payment method is declined in the App Store or iTunes Store - Apple Support