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.
Was your hatch reversing (opening back up) when it failed to latch?
My brand new Model S did this intermittently and Mobile Service determined that the strike plate was misaligned. Fix took about 10 minutes, done in my own garage a few days ago.