Sidebar Not showing correctly

Hello,

I am trying to change the sidebar on certain category pages such at the one on this page:
https://brick-hub.com/category/reviews/

I have the category “reviews” added to the custom sidebar, but for some reason it still will not display in the correct location. It displays on individual posts but it does not display on categories. Is there a way to fix this?

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