Cool that you can play the game on other computers :) That said - this is something that occurred to me only once in bed - maybe you could still get it to run on your Mac with Wine (in the past, I did try the Windows version on various Linux machines at it ran just perfectly).
I'm glad you still have the original personal code. If one day you want/need to get the corresponding download link here on itch.io, just go to https://www.retream.com/BOH/get_key.php (BOH landed on itch.io only several years after its initial release, so the original codes need to be "converted" first).
I can't thank you enough for your kind words. It's a great satisfaction to read that you enjoy unusual and complex games like SkillGrid and MAH, and, of course, that you like my games in general :)
I can't wait myself to release the SkillGrid update, but that one last technical hurdle mentioned in the update details is really hard to overcome.