Menu items?

I’m finding any menu item I try for the property doesn’t work, just gives a 404 error. I’m also unable to get the shortcode working.
I did succeed in using a custom link to properties to get it to work, but its kind of confusing to have menu options that don’t work. Am I missing a setting somewhere?

https://www.ads-software.com/plugins/lava-real-estate-manager/