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To change the card on file, you will need to do so from a computer. Please try this:
Click here: https://www.amazon.com/mycd
Sign into your account if prompted
From Settings, select Edit Payment Method below Digital Payment Settings.
Select the desired credit card information, or add a new card, and then click Continue.
Enter the desired billing address, and then click Continue. You will be taken back to the Digital Payment Settings page where you can view your edited 1-Click payment method.
Restart your Kindle and try again.
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