If you need to update or change your credit card on file, you can do so with a few simple steps.
Go to the account/billing section from the bottom, left navigation menu when logged into Privy.
Select "Payment Methods" from the top, right side of the pop-up window.
Select "Add Payment Method" from the pop-up window.
Enter your card number and expiration date, and press save.
Once you do this, your credit card information will be updated and your next renewal will be billed to the updated credit card on file.