You can update your payment information in the profile section of your Cheetah App. Simply choose the "payment methods" tab to add or remove credit cards.
To add a card click on the "+" icon at the top right of your screen. To delete a payment method, click on the card you wish to cancel and tap the "remove" icon.
Please note you will need an active credit card linked to your account at all times. If you would like to remove a card, make sure to add the new card before deleting the old one.