See if your notifications is not filtered to All Follows up top. Choose Global to see the zaps.
Discussion
How do I do that? In Amethyst settings?
Go to the notification tab and click in the mide of the top bar to select the list of people you want to get notifications from.
We just have a bug right now where zaps don't show on follows.
Okay, thanks! I've enabled "Global" 
if u never go to global then u r in echo chamber mostly