I have recently made a purchase of Cyberpunk 2077 and accidentally forgot to press the "save credit card details for future purchases" button when checking out.

I would like save my credit card, but for the love of god, cannot seem to find out how to do so. I have looked on forums, the website, and the galaxy client and just can't find it.

Can someone help me out and provide me with some directions to access, update, and save my payment method?

How do you protect my payment information?

Your security is very important to us and we go to great lengths to protect it. We protect the confidentiality of every transaction using secure encryption (SSL). Also, for your added security we do not retain any credit card info on our servers. Your payment information couldn't possibly be safer.

Source: FAQ

Every time you wish to make a purchase you would have to enter your credit card information.

Firefox and other browsers safes information entered in certain form/text-fields. Here is a guide how this works. In essence if you wish to retain any information you'd have to prevent your browser from deleting history and/or not using private browsing or Virtual Store or any other software which doesn't retain session data or data entered.

I *think* you have to go to orders and settings ---> login and security and enable two factor authentification before you can save a credit card.

After that I imagine you can go to wallet and add a card? Or maybe it's back under login / security.

There are many step-by-step instructions on YouTube on how you can add a bank card and link it to a specific account. By repeating all the steps, you can easily link your card.