Got a new card and cannot see where we need to change payment details. Do we do this on the kindle itself

Go to Amazon and update your payment information for your account. Be sure to make new payment method the default payment method.

Noretta,
Manage Your Fire & Kindle Payment Settings

1. Manage your content and Devices.
2. From Settings, select Edit Payment Method below Digital Payment Settings.
3. Select the desired credit card information, or add a new card, and then click Continue.
4. Enter the desired billing address, and then click Continue. You will be taken back to theDigital Payment Settings page where you can view your edited 1-Click payment method.

Follow the link below labeled "Help Search Results". It will take you to Amazons help site and give you the same instructions as above but will ask you to log into your account so you can actually do the above process without have to search around for the correct links.

Help Search Results

If you need further help, I’m available over the phone at https://www.6ya.com/expert/thomas_e8f475a8655f7b4a

Go to amazon.com Below the address bar you'll see 'Your Account' Hover over that and click your account from the list. It will take you to a sign on screen and connect you to a secure server. From the list find payment methods Under that click manage payment. It will bring up the kindle wallet and you will see your card listed. click the arrow on the right side and then click edit at the bottom of the box that shows your address info. You can then change the expiry date and confirm it. Also check if that is the default payment method.

Get on Amazon go to Your Account, then Amazon Wallet, then Manage Payment Options. You can edit and change your existing card info here or add a new card.

1. Go to Manage Your Content and Devices.
2. From Settings, select Edit Payment Method below Kindle Payment Settings.
3. Select the desired credit card information, or add a new card, and then click Continue.
4. Enter the desired billing address, and then click Continue. You will be taken back to the Kindle Payment Settings page where you can view your edited 1-Click payment method.

http://www.amazon.com/gp/help/customer/display.html?nodeId=201252570

Go to account settings. Select manage payment methods. Should be able to add or remove card.
Contact Amazon at.
[email protected]
If you have any problems.
Ellen

Log in to your Amazon.com account and under "Your Account" click on "Manage Your Content and Devices." The right-hand column at the top is labeled "Settings"--click on that, and then under Kindle Payment Settings you'll see your current card listed, such as "MasterCard ending in *1234" Click next to it, on Edit Payment Method, and enter your new card's details.

You need to change the number on the Amazon site. Go to Amazon, your account, Manage payment options, will probably ask you to verify log in info, Click on Add payment method, You MUST set new card as default. That may be what you missed. I did it the last time I changed mine. There should be an option to delete old numbers.