You can at anytime change your credit card payment method for your Pebble account.
Here's how you change your payment method:
- Login to your Pebble Account
- Go to Settings on the menu bar
- Under Payment Method, select Change
- On this screen, select Add new card
- Enter in your new credit card details or choose an existing card you have added already.
- Then confirm by clicking the Add Card button.
Your new card selected will be the card which you'll now be billed from.