To add a debit or credit card to your Services account you would do the following:
1. Browse to https://www.blackmoonhosting.com and click the Client Log In menu.
2. Click the green 'Secure log in' button under Services & Billing.
3. Log into your Services account (Forgotten your password? Reset it here).
4. Click on the Billing > Manage Credit Card menus OR Payment Methods
5. Now simply enter your new credit card credentials and click Save changes. To set the new card as your default payment method simply select the Set as Default button.