You can add or update credit card information after you log in to your account with us and click on Billing > Manage Credit Card.
Please be informed that we use secure connection and the sensitive data cannot be stolen. It will be used only for internal purposes and will not be disclosed to third parties.
Important! If your credit card information is stored at your account with us, it will be charged when your domain(s) requires renewal. Please keep it valid and up-to date to avoid issues with renewal. If your credit card information in the account is lacking expiration date please follow the directions here.