If you can't turn on your Natede with the proximity sensor, simply passing your hand in front of the little hole, try to follow these simple steps:
If you selected the automatic mode, your Natede will turn on only when necessary (when certain values exceed the limit).
So, if you try to turn it on with the hand gesture it will not be possible. To turn it on, you can change your mode to standard and turn it on whenever you want.