Chuwi h10 not detecting hipen h3

hi guys,
I tried first the hipen h6, which doesn’t work with the chuwi h10 that does not start with h6 in the serial.
So I bought a h3 has said on the compatibility post, well well well it dors not work at all no détection what’s so ever.
I tried all thing switching battery side, pressing both button at the dame time, turning the pen upside down … Nothing work …
What can i do ?

Nobody know? Nothing really?