Hello, and thank you for quick support!
I've updated both latest Windows spacedesk driver and android viewer. I've been testing the improved app functionality and I'm happy to say that the bug has been fixed for me. Now the pointer position matches perfectly the touch spot.
There is only a minor issue that I'd like to report: when I minimize spacedesk app (without shutting it close) in order to use the android tablet for other purposes, then I go back to spacedesk either tapping on its icon, or calling it back from the recent-app button in the bottom bar, the android bottom bar itself will appear solid and always-on (instead of being transparent and auto-hiding within a few seconds) causing a slight vertical shrinking of the windows display, and causing again an increasing vertical mismatch between touch spot and pointer position - this time the pointer is shifted upwards respect the touch spot.
I can work around this problem by closing the app and launching it again: now the android bottom bar will turn transparent and hide immediately. Both resolution and touch position will be perfect. I wonder if is there a way to force the bottom bar to hide itself upon calling back the spacedesk app from recently used list, just like it was launched from scratch... this could be really useful.
Thank you again, I'm really loving spacedesk