1. To add or update your billing details, log in and click Settings > then click ‘edit’ on your centre name on the right-hand side.
2. Scroll down and click ‘billing’ on the left-hand side.
3. Enter your billing information. Then, enter your credit card or bank account details and ensure you tick the box 'default payment source' under the option you've added.
4. Click 'Add' under either the Credit Card or Bank Details.
5. Your billing details have now been updated/added.