You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
CVRP calls it purchase agreement.
Tesla calls it Order Agreement or Invoice.
They just want proof you bought it or leased it. No worries, CVRP will email you quickly if you need to send something else. I had to send copy of drivers license.