Infinite Scroll Jetpack for Hueman not working

Hello!
I have a homepage (using HUEMAN theme) where I display a slider on the top and a grid of 4 articles below. If you want to load older articles you have to click NEXT PAGE on the bottom right of the page.

I would like to give the user tha chance to just scroll down to load new article or, in the worst case, they just have to click LOAD MORE…

Tried to solve it activating Infinite Scroll on Jetpack but I see no differences. It seems like it’s not working at all.
All the others features of Jetpack I am using are working perfectly (i.e. Social buttons).

Can someone help, please?

Thanks