Adding an Offer to Multiple Cards
One of the many benefits of the CardPointers extension is the ability to add an offer to multiple eligible cards. Not every card gets every personal offer, but often times multiple cards in an account will be eligible.
Configure Offers in Settings
To add an offer to more than one card, you'll need to leverage the extension's auto-add feature, or selecting All Cards when manually selecting individual offers. More details on each below; you can configure the extension's Offers setting by opening the extension's popup, navigating to the Settings tab, and setting the Offers selector to your desired option.

Auto-Add
This is the simplest way to add your offers across all eligible cards, which is why it's the default when first setting up the extension. Every time you log into the bank websites you use (eg, americanexpress.com, chase.com, etc), the extension will automatically add all offers across all eligible cards.
Auto-Open Modal
This option will automatically open a modal screen when you log into the bank websites and bring up a list of offers for one of your cards. Click on the card selector at the bottom left of this modal screen and choose All Cards to view all offers across all of your cards, grouped by offer. Select any offers you want to add, then click the save checkmark at the bottom right.

Manually Add
This option will add an "Add Offers with CardPointers" button into the UI of the bank websites; click on it to open the modal view above to select your offers, switch from 1 card in the bottom left dropdown to All Cards if you want to add an offer to multiple cards.

Amex Caveats
An offer can be added to multiple cards when in the same login, but not across different logins for the same person, so you'll want to consolidate your Amex cards in one login. Once you add an offer, you can't add it to multiple cards afterwards, so you'll want to always activate new offers by using Auto-Add or the All Cards option through the CardPointers extension.
Amex has recently been testing some infrastructure changes in mid 2025 which sometimes limit an offer from being added to more than 10 cards.
In October 2025, Amex has been deploying new infrastructure which has been much slower and more unreliable than their previous infrastructure, and when a server is slow to respond or unresponsive it can sometimes prevent an offer from being add to every eligible card, even with fewer than 10 cards. To maximize your chances of having an offer added to even more cards it's best to add your offers early morning or late evening when there's less load on their servers. Hopefully as they complete the rollout the servers will be as reliable as before.