Site Categories Widget Not Showing

Hi,
In a new install, I activated the Site Categories plugin. I then created 2 adult categories with 4 child categories for each one.

I put the Site Categories widget in a sidebar and set it to show all the categories from 1 of the adult categories I previously created.

I created a page and using the page builder, I put that sidebar in a row to display it.

I tested it with both the Divi Theme using their page builder and The Parallax One Theme using Visual Composer page builder.

In neither case did the widget show the categories

Any ideas?

Thank you
Michael