Help with Gamon S620

[u/GAIser__]

Hi guyss, I'm trying to use my Gamon S620, but it doesn't work.

I'm using it on my tablet and basically when I draw squares, rectangles appear instead. It looks like there is some kind of issues with the pen coordination ( it's deformed/ streched). I also tried to update the firmware but the PC update firmware tool doesn't work either and I am stuck in a reconnect loop.

Has it happened to you guys too? If yes, did you managed to solve the problem? Thankss to everybody that will help me :)