I use the MX Master 3 mouse with the K850 keyboard. It's pretty disappointing to get an alert that "opions+ is out of beta!", but then open it to see that yep...they STILL do not support the K850 which isn't even that old of a keyboard and doesn't even have that crazy of features. Will be uninstalling Options+ and using the 3 year old software that actually supports my devices. If your team wants to push "new" updated software...how about you make it support the devices your customers use?