Manuel and I have been exchanging private messages. I can�t reproduce the keyboard problems that Manuel describes, and they seem to have something to do with his Mojave system. As far as I can tell, all keyboard states work perfectly. Of course, you need to disable any keyboard shortcuts in the Mac�s System Preferences (or System Settings) app that conflict with the XyWrite keyboard, But I can�t imagine what the problem on Manuel�s system might be.