hey there, to change or add a billing address for invoices in Clay, you can update your payment method information with the new billing address. If the billing address matches your payment method, you can add the new details by clicking the "update card" action. If the billing address does not match your payment method, you can provide the details you'd like to add, and they can be added for you. Here is a visual guide to help you with the process: Update Card Action.