Thanks a bunch!
I'll see what I can do about controls, I could add an image in that first level on how I think you should place your fingers on the keys, instead of "having a seperate finger on each key is reccomended." But with that said, I don't want to seem patronizing, or discourage other ways to play the game.
Other than that, key rebindings and controller support are the only other solutions I can think of. Still, thanks again!