I don't think you've understood, the wasd keys work, they are the ones that work, but since they aren't placed to work like this it's ridiculously hard to control.
Basically, imagine w becomes c, d becomes s, s becomes d, and a becomes q. Try to put your hand like this and you'll see why I say it's unplayable.
Even if I was using qwerty, giving the option to the player of choosing the keys they want to use should be here.