ACE Advanced CAtegory Excluder

I cannot figure out how to make this work at all. (WP Newbie)
I am trying to hide the name of my category on all pages (it is being posted to, however).
But I still want search engines to be able to find/index the posts

No matter what I do, the category name shows.

I also have the ACE widget plugin, though it sounds like that is no longer needed anyway.

Can anyone give me a quick rundown on how to use this plugin?

Thanks!