category sidebar not showing up

I have tried for several hours but I can’t seem to find a solution. I’m sure it would be a quick fix for tech wizards, so be kind!

So my problem is that the Category sidebar I have assigned on the page refuses to show up. I have edited all I know how to edit, but still nothing. Different sidebars I have assigned to specific pages work just fine, but it’s only this page giving me trouble. Please help!

Here’s the page that isn’t cooperating: https://www.melissafox3d.com/game-blog/