Click the Billing Information link for any of your services.
Click the Payment Methods tab at the top of the page.
Click the Assign link next to the payment method that you wish to assign to another service.
Select the checkbox next to Service to assign the payment to all of your services or click the checkbox next to the services to assign individually. Click the Assign button.
Change a payment method
To switch the billing method for a service from one payment method to another, go to Payment Methods and follow the steps above to assign the desired payment method to the service.