If you get yourself a new credit card and the old information is invalid, you can follow these steps to update or change your credit card information.
Step 1 – Go to the left side menu and click "Account Settings".
Step 2 – Click “Billing Address & Credit Card” on the left side of the page.
Step 3 – Scroll down to the bottom of the page to get to the credit card section.
Step 4 – Fill in the information required in the “New Credit Card” section.
Step 5 - Click on “Save as new credit card” to continue.
This action will automatically remove and overwrite your previous credit card information.