To update your delivery address via the website, head to the "My plan" person icon after you log in. Select "Update" next to "SHIPPING ADDRESS." Enter your new Shipping info and select "SAVE."

To update your subscription's shipping address via the app, go to the calendar icon. Under your next delivery click "Manage Plan" and update your shipping address there. 

This new address will become your default shipping address to which all future shipments will be delivered.