Displaying Incorrectly

Hi,

I use twenty-nineteen across a number of my websites. But this one is not displaying correctly at this site:
https://www.floridalegalvideo.com

It displays correctly to me when I am logged in and editing the backend. And it looks correct in the preview. But once I am logged out, I see a completely different site.
I’m using the theme as a simple one-page. I have using the same plugins and widgets on the twenty-nineteen theme on other websites, with no issues. But this one site is causing an issue.
Any input that can solve this for me is most welcome and appreciated.

Kindest regards, Jim

The page I need help with: [log in to see the link]