I'm unable to add shortcodes to the listings page to show

I'm unable to add shortcodes to the listings page to show categories, etc.

The page shows that I'm signed in; I can get to the dashboard, etc. but I can't do anything with that page.

http://www.cortjohnson.org/listings/

The formatting on the outside of the page is also off - some widgets are not being displayed and colors in the sidebars are different from the site.