Answer by gorsefan

It looks to me like a sub-optimally configured web server. If I hit the screenShotURL I get a 404 response, but I also get served XML;0Unknown method. Hit another random page on that domain, you get a proper 404 response & page. Now this is probably because I am trying to GET a URL which expects a POST along with other data, such as probably a hidden form field with a method name the web server expects. Responding with a 404 in this situation seems like poor HTTP to me as it looks like there is a resource there, it just doesn't like your request, or the web server is configured to serve different 404 responses from /restapi than the rest of the domain, which is weird. IMO it should respond with a 400 Bad Request, or 403 Forbidden, depending. Short version, it looks to me like you are missing some data to fulfil the request & this isn't a Unity question. I'd look for a method parameter, check cookies, do you need to be signed in? etc etc. And read their restapi documentation. Either way, only the owner of that service can really help you I think...