– Categories, actions, cities and areas – have the slugs written correctly.
Correctly means that title and slug match.
Ex: title “House” slug must be “house”
title “House for rent” slug must be “house-for-rent”
and so on
This is very important for search to filter/show results.
If you still have troubles, I can take a look at all the settings and advise. The theme is working on demo, so it’s something in settings for sure. I’ll help you figure this out quickly. I’ll only need wp-admin credentials (which you can send me at email@example.com)