Is the Nestoria API still operational in 2024? [closed]

I'm trying to use the Nestoria API for retrieving real estate listings, but I'm consistently getting "unknown location" errors even for valid locations like "London" or "Barcelona". Here is an example of the request I am making:

GET https://api.nestoria.es/api?country=es&pretty=1&action=search_listings&encoding=json&listing_type=buy&place_name=Barcelona&page=1

And here is the response I receive:

{"request": {"country": "es","language": "es","location": "Barcelona","num_res": "20","offset": 0,"output": "json_xs","page": 1,"pretty": "1","product_type": "realestate","property_type": "property","size_type": "net","size_unit": "m2","sort": "nestoria_rank","listing_type": "buy"  },"response": {"application_response_code": "200","application_response_text": "unknown location","attribution": {"img_height": 22,"img_url": "https://resources.nestimg.com/nestoria/img/pbr_v1.png","img_width": 183,"link_to_img": "http://www.nestoria.com"    },"created_http": "Tue, 25 Jun 2024 16:34:38 GMT","created_unix": 1719333278,"link_to_url": "https://www.nestoria.es/Barcelona/casa/comprar","listings": [],"locations": [],"page": 1,"sort": "nestoria_rank","status_code": "200","status_text": "OK","thanks": "For using the Nestoria API.","total_results": 0,"_cu5t0mP434m_": "remove"  }}

Actually, their own examples here are not working.I have checked the documentation but couldn't find any recent updates. Does anyone know if the Nestoria API still being maintained, or is there any official communication about its status?

Thank you!