How to get classified plugin to stop showing "No categories"

I'm using the shortcode to show the categories for both the listing and classified plugins on this page -

For some reason, the classified plugin shows "No categories" under each category. I'm assuming this is referring to subcategories. However, I've gone through both plugins to see if I'm doing something wrong, but only the Classified plugin is doing this. The Listing plugin isn't. I'd rather have it so neither of them do it.
Also, I was also wondering if there's a way to change the font type and size settings. This works okay, but I'd like to make them a bit smaller and perhaps bolder for easy reading.