Hi, I did had the same problem, I contacted Litchi they told me to contact amazon. I called amazon and got told to pay and reinstall the app, and it will take approx.3 to 5 days to receive an refund.
Claus.
My obstacle avoiding turns on in mid air, about 300' above the ground, but nothing is around what could trigger it.
Before the update everything just worked fine.
Claus