Not Displaying Categories

I created 5 placeholder posts and assigned them to the same category. I selected the category in the widget. When I check the sidebar it says “No categories”. Not sure what the issue could be.

http://r2.temporary-access.com/~visionbanks/essentia-health-regional-foundation/

Thanks in advance for any assistance.