View “detail” issue happened in WP multiple-site. Single site seems Ok.
I have found the reason that “zip code” can not be saved. Zip code input can only be “number”, not “text”. otherwise, zip code can not be saved.
You should change the zipCode input variable setting since the zipcode in some europe countries consists of nember and text!
Another bug is that “Longitude” and “Latitude” can not be automatically generated. Manually input the data, can not be saved. Thus, keep “undefined”.
The map can be shown at backend. But no map data in frontend.
I setup a test-site for your reference:
https://house.zs-store.com/?properties=2-bed-room-house
the site also has another real-estate plugin.