Footer menu reads only "no categories"

Hi there,

I am a total novice– no HTML5 or CSS– and have been building a website with the Customiz’it theme. The theme does not have a footer menu. I have tried several widgets, but they all fail to display correctly– often are vertical or bunch up. I installed the Menu-on-Footer plugin, but it does not seem to pick up the pages. My understanding from reading is that the default setting would automatically populate the menu with existing pages automatically, unless specifically excluded (??) Right now my footer menu reads only “no categories.” Any help for a novice?

Thanks so much

https://www.ads-software.com/plugins/menu-on-footer/