In order to update your card, please log in your account and follow these steps:
1. Click on my account
2. Under "Your Subscription" click on update payment method
If your my account page indicates that your subscription is through iTunes, Google Play, Roku, or otherwise you will need to update your billing information within those companies systems as the charges go through them and not directly though Motor Trend OnDemand.
We understand how frustrating this can be and should you run into any issues, please do not hesitate to email us at Help@MotorTrendOnDemand.com