Are you signed up to use ORS?
You are attempting to use the OpenRoutService api with a Get control. I see nothing in your Blocks that indicates you signed up and acquired an API key. The key is needed to access the different endpoints that make up the openrouteservice.
While it should be possible to access ORS using the api, the easiest way to use ORS with App Inventor 2 is to use the Navigate control. Navigate provides direct access to the ORS api.
HOW TO: Use the Navigate control to use OpenRouteService.
Note that ORS works best with an OpenStreetMap, not a Google Map.