If you wanted to change/update card on file for where TeamPages subscription will be charge, refer to steps below: 
 
  1. Log in to TeamPages
  2. Go to Team/Club/League/Organization Page
  3. Click Settings
  4. Click Subscription
User-added image
5. Click Update Billing Info
 
User-added image
6. Click Enter a New Card

User-added image
7. Fill Up Card and other Details
 
Note: Name on Card , Card Number, Expiry Date and CVC (Card Verification Code)/CVV (Card Verification Value) should be the actual information on the card
 
User-added image
 
8. Put a check on I Agree and Click Update