Why you can't reach the drum you want? Or why when you try to hit one drum-head but another one goes on?
Maybe it's because you are not familiar with the correct gestures, then you will need the following tips:Open the app and learn from the teaching video that how to hit the different drum-heads in different positions and gestures.
If you are familiar with them, maybe it's because of the correction:Calibrate the PocketDrum according to the notes in the app. The PocketDrum needs correction each time after switched to another mode or after your body or hands have moved. Drift error may also occurred after a long-time playing, then you need to re-correct the PocketDrum.