So I've been using Display Fusion fine for the longest time, but recent hardware changes required to have the latest nVidia drivers installed, and after upgrading the video drivers, now DF hot keys no longer works.

I used to have a few programmed hot key combos to move screens around the different monitors, but now they are not responding.

I've tried uninstalling / reinstalling DF and it's no use, I did try restarting the computer. I even tried re-creating the hot keys from scratch to no avail.

Running latest version of DF 9.4.3, with a Steam license key, and nVidia driver 425.31

bah!!!!.... found the problem.
keyboard switch disabled the Windows key.
pushed it back, now everything is working fine.