Make sure you are registered with an account by clicking here

If you already have an account click here to sign in

Sign in using your email address and password (Phone Number + PIN Code is no longer supported)

Once signed in you will see your account Dashboard

On the account Dashboard click on "Manage Payment Methods" under the Your Account section

Click the "Change" button in the Auto Payment Status section

Click the dropdown arrow and select the account you want to use for automatic payments

Click on the "Save" button