If your credit card has expired or you wish to contribute using an alternate method, please cancel your active contribution plan. When that plan expires (one year or one month after the date of payment), you can choose to contribute again, using a credit card and you'll be able to update it from our site.
You can manage your contribution plan in your Payments page within your Account Settings. You can click here to get straight there.
If you are having any issues updating your information, please contact our support team.