If you purchased your subscription through smithsonianearthtv.com, you can update your credit card information on the website:
- Visit smithsonianearthtv.com and log in
- Open the menu in the upper right corner to navigate to the Account page
- Select ‘CREDIT CARD INFO’ under your Subscriber Info
- Enter your password and click 'VERIFY'
- Update your credit card information and select ‘UPDATE CARD’
If you purchased your Smithsonian Earth subscription through iTunes®, Google Play, Roku® or Amazon®, you will need to update your payment information directly through your account with them.