When you move your “mouse” on your tablet from the far left to the far right, it should go from the left monitor to the right.
If that is the case then the problem is, that what you are requesting is not possible, because your Tablet is not capable to just higher the dpi of the touchscreen!
Screen to tablet
the whole thing is working fine on arch-linux using gnome shell!
Would it be possible to have a picture of the screen on the Android device?
Maybe it doesn’t need to be a live-view. Only a screenshot for orientation could be a very nice feature to draw on.
We’ll try to incorporate something like that in the future! Thank you for the suggestion