H7 palm rejection problem

I’ve bought freebook n150 with h7 pen recently, but for some reason palm rejection isnt working. It can work correctly for a few minutes after launch, but then breaks. Also, ive tried to cool up display and it still works in the same way. Already tried to turn off “touch input when pen in use” in windows options. How can i fix that?

If you frequently use the stylus for this purpose, I’d recommend wearing an artist glove for drawing tablets. It prevents touches and also smudges from your hand.