•       Log in to your account.
•       Under “My Wallet”, click on “Manage”
•       Click “Add Payment Method” or locate the payment method you wish to edit and click on the “Edit” button
•     Follow the steps to complete the process 

If you have more than one payment method, and you wish to change which one is the default payment method, click on “Manage” under “My Wallet”. Locate the payment method you want to select as the default, and click the “Make Default” button. You will now see a green checkmark and the word “Default” on the default payment method.