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
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Click Update Billing Info
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6. Click Enter a New Card

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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
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8. Put a check on I Agree and Click Update