Почему не получается авторизоваться в django приложении при помощи C#?

HttpWebRequest tokenRequest = (HttpWebRequest)WebRequest.Create("http://carkit.kg/login");
	tokenRequest.CookieContainer = new CookieContainer();
	string token = "";
	using (var response = (HttpWebResponse)tokenRequest.GetResponse()) {
		token = response.Cookies["csrftoken"].ToString().Split('=')[1];
	}

	HttpWebRequest loginRequest = (HttpWebRequest)WebRequest.Create("http://carkit.kg/login");

	var cache = new CredentialCache();
	cache.Add(new Uri("http://carkit.kg"), "Basic", new NetworkCredential(username, password));
	loginRequest.Credentials = cache;
	loginRequest.PreAuthenticate = true;

	loginRequest.Method = "POST";
	loginRequest.CookieContainer = new CookieContainer();
	loginRequest.CookieContainer.Add(new Cookie("csrftoken", token, "/login", "carkit.kg"));
	Debug.Log(token);

	loginRequest.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
	loginRequest.Headers.Add("Accept-Encoding", "gzip, deflate");
	loginRequest.Headers.Add("Accept-Language", "ru-RU,ru;q=0.8,en-US;q=0.6,en;q=0.4");
	loginRequest.Headers.Add("Cache-Control", "max-age=0");
	loginRequest.KeepAlive = true;
	loginRequest.ContentLength = 82;
	//loginRequest.ContentType = "application/x-www-form-urlencoded";
	//loginRequest.Headers.Add("Host", "carkit.kg");
	loginRequest.Headers.Add("Origin", "http://carkit.kg");
	loginRequest.Referer = "http://carkit.kg/login";
	loginRequest.Headers.Add("Upgrade-Insecure-Requests", "1");
	loginRequest.UserAgent = "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36";
	loginRequest.Headers.Add("XCompress", "null");
	loginRequest.Timeout = 3000;
	loginRequest.Headers.Add("X-CSRFToken", token);

	byte[] data = Encoding.ASCII.GetBytes("username=" + username + "&password=" + password + "&csrfmiddlewaretoken=" + token);
	loginRequest.GetRequestStream().Write(data, 0, data.Length);
	loginRequest.GetRequestStream().Close();
	HttpWebResponse authResponse = (HttpWebResponse)loginRequest.GetResponse();
	Debug.Log(authResponse.ResponseUri);