I seem to be having an issue much like this post... https://premium.wpmudev.org/forums/topic/directory-plugin-is-only-displaying-a-single-entry-rather-than-the-list
I currently have my directory listings set up with top-level categories of Artists, Dance and Musicians. Under the Musicians category I have a number of sub-categories. I entered a couple of "test" listings under the Musicians/Latin category. But only the information for the last listing entered shows up as seen here... http://ormaco.org/listings-category/musicians/latin/
The category listings seem to be either a blog or archive page. I can see where I can change some of the settings for these pages within the theme settings, but nothing that seems to affect the displayed results.