I own a Chuwi Hi12 yet face the same problems. My solution was to turn off the corresponding keys (Win-D, etc.) completely. To do so I use AutoHotkey (https://autohotkey.com/) with the following script: #D:: Return #Tab:: Return #A:: Return #B:: Return #Down:: Return #Up:: Return Maybe this works for you as well.
Many thanks, it works perfectly !
I can finally use the touchpad !!!!
