Yes .. if you can't show the recorded flight data, DJI won't have any way to tell what happened to the drone.
Losing signal won't cause a drone to fly off into the distance, so there's something more to this incident.
If you can give a more...
Yep not much anyone can do if you have nothing left to show.
Try to get in contact with the tour op and see if there's a way you can get your backpack found and shipped to you, might be a while but...
Same situation.
All of our camera gear was in that bapack we forgot on the tour bus.
I'm guessing DJI will tell me to kick rocks on getting the avata 2 replaced