Hey everybody, I had the same problem with my Rollin Spider and here's what worked. - First do a factory reset on the App. You will see a reset icon on the top right corner in the app -Second remove all the propellers and swap their positions interchanging left to right and from one side to the other. - press down the propellers till you 'feel' or hear a clicking in sound. - on the app choose the normal mode and you are all set to go.