Tested on Win 10 x64 (20H2) ...
Strange thing , can't make it work interacting directly with my keyboard, when i record it recognizes the keys (two times instead of one) ex: i press "C" , and the program recognized it as "C C" , so can't make it work with mayor, or any chords, and then, when i play, nothing happens on the keyboard (didn't play).
BUT if i use an "intermediate" program (like vArranger, or OMB) it works like charm!