Please follow the below steps in order to change your your billing information and card details.
Step 1: Go into your SellerChamp account Settings
Step 2: From the list of options on the left hand menu, choose Billing & Subscription
You'll now be brought to the page where you'll find the:
- Current Subscription details
- Billing Information
Under the Billing Information section, click the Change Billing Information button and modify your card details.