8.1 oreo – I can not activate the notification icons badge on Moto E5 Play

I have a Moto E5 Play with Oreo 8.1 and I can not activate the notification icon badge, I mean those little dots on the home app icons.

When I go to Settings-> Apps Notifications
there is no option to activate it.

If I go to the configuration of the application, is there an option to activate it individually but is grayed out?

I search the web but nothing solves this problem.