I just got a Tello a couple of weeks ago. I just started experimenting with the Drone Blocks App. I put together a simple flight program and it executed most of the commands. Then I took it outside and made a new flight plan. I had it programmed to take off then go up several feet, flip and land. When I started the program the Tello just flipped from take off and slammed the driveway. I tried it again and it went 20 feet in the air and turned off, causing the aircraft to crash in the driveway and lose the props. Any one have a better experience with the appp? Please let me know if there are any tricks to making the flight program.