Users may add up to 10 cards (maximum) to their Blockchain.com wallet.
Once you add a card, your Blockchain.com Wallet will remember it for future purchases.
How to manage your payment methods
You can manage your payment methods in Settings (under Settings > General in the web wallet or under the main menu in the top left corner of your mobile app).
Here, you can add another card, edit the details of saved cards, and delete cards.