To update your billing address, click on your name at the top right on the app, select Profile. Then go the the tab Billing.
There you will be able to update your billing address but also download your invoices, add/update your payment method and edit your plan.
Your new billing address will be added to your future invoices. Note that we cannot change or edit previous invoices.
If you would like to update your Profile or Company information, check out this article.