Managing payment methodsYou can manage your payment method in the account console
Navigate to your account and select Payment method from the navigation menu. There you can enter your credit card information that will be used for upgrading your account.
After you've entered your credit card information, press Update payment method and the information will be stored.
If you want to cancel your subscription and remove your payment method, first make sure you have no active projects and that your account is not on any paid plan.