CHUWI UBook Intel Gemini Lake N4100 8GB RAM 256GB with HiPen H3

Hi,
I have the CHUWI UBook Intel Gemini Lake N4100 8GB RAM 256GB and bought an HiPen H3 to work with it.
It works as a pen and as a mouse but I can’t make the buttons work. In the box it says the buttons are right-click and erase.
Are there any drivers for it?

Thanks