Hello ! I had almost the same issue ! My Chuwi HI12 arrived and I discovered that Hipen H1 works perfectly but just in the middle left of the screen or putting the H1 with a close angle with the screen !|
Another problem I experienced was touch detection was very bad in the center middle of screen.
Then, I changed configuration in the touchsetting.gt file. Right now, my touch and stylus are working well (I could say 98%) .
I have sent the file to Emily for trying to validated it (if there is a problem in others Hi12s).
Changing parameters is not ease ! Everytime you change a value, it is necessary to recalculate one parameter that is the checksum of others ! .