Just to be sure, I tried again. Cleared all settings and walls, deleted all spacedesk folders, uninstal driver, restarted laptop, deleted app from iPad. I reinstalled and without any settings touchscreen and keyboard work. I created Wall, just changed iPad resolution from spacedesk driver – Wall and Control settings, but again touch screen and keyboard not working. The good thing is that at least the mouse works noticeably more stable at a lower 1152×864 resolution.