Thank you for playing! Not sure why the WASD keys didn't work. Hmmm. That's really strange. A and D move you left and right unless you wanted to be able to jump with W. If your WASD wasn't working in general, I'm not sure why.
Oh! If that’s the case, it may be an issue with Safari on macOS since I noticed that the D key sometimes doesn’t work in Unity WebGL games in Safari for some reason.