I couldn’t see the highlights either on my first hole. Or maybe there were no valid landing spots, I’m not sure.

I also thought the black circle was the hole, not the ball. Golf balls are normally white, not black.

EDIT: it appears that the highlights (and trails) disappear if you scroll up and down a few times (iOS mobile safari)

Or some sort of pulsing on the clickable areas. I reloaded the page a few times before I realized the pale yellow spots were supposed to be clicked. I assumed it was bugged, but I was wrong.