I bought the Tello with the propellers and just 4 months after I crash into a bush, no biggie, right? When I fixed everything looked correct, however, when I tried to take off it just kept flipping, un able to fly. I looked everywhere for answers, I calibrated the drone switched propellers, until I came across this yt video, he says what’s happening to the drone and it is really similar to mine, he said the things I’ve done which didn’t work, but he also says that the propellers are chipped, he showed me his chipped propellers and I looked at mine, the chipped looks exactly the same. So overall the drone is good but the propellers are super fragile.