You can add, remove, or change your default credit card within your account settings. Hover over your name at the top right corner of the homepage and choose "Account Settings" when the menu appears, then choose "Credit Cards."
- To add a new credit card, fill out the billing information field and click "save"
- To remove a credit card, find the card in the list at the top of the page and click "Delete this card" on the right
- To change your default credit card, find the card in the list at the top of the page and click "Make Default," or check the "Make Default" box on any new card you're entering