I use an MX Master 3 mouse, which is the best man-made mouse in the history of IT, this is clear... However, this app doesn't need to do much at all, just map and adjust some mouse and keyboard buttons, but it's not the first time I've had a ******* update completely **** up my mouse. The app doesn't connect to the mouse and my map-ed buttons don't work at all. What is wrong with you guys, do something about this ****. Fix it for good and leave the app alone!