Categories not displaying?

Hello, I want to be able to select a category and pull this information through to another site on my multisite network but its just not doing it for me.

So for example. on this site – https://www.247united.com/pregnancy/
Where the events widget is on the main page, I want to be able to pull the content from
“prenatal classes” events which are on the main site here- https://www.247united.com/events/categories/pregnancy/prenatal-classes/

Could you please advise why it’s not pulling the information through?