Listing page not showing listing information

Hi, I just downloaded this plugin and its exactly what I was looking for. I just created a quick and dirty listing to test it but the actual listing page is not showing the listing information. I added the short code and I see the listing, but when I click on the listing the page says: “Apologies, but the page you requested could not be found. Perhaps searching will help. Additionally you can return to our home page and start over”. When previewing the page it shows fine, but once I click on publish I’m able to the preview anymore either. What I’m doing wrong? Many thanks!

https://www.ads-software.com/plugins/wp-listings/