App Latest version from the App Store

i am using this code

public static bool CheckForForceUpdate() { try { Version latestVersion = new(GetLatestVersion()); Version currentVersion = new(AppInfo.VersionString);

            if (latestVersion != null && currentVersion < latestVersion)
            {
                NSUserDefaults.StandardUserDefaults.SetBool(true, StorageKey.IsForceUpdate);
                return true;
            }
            else
            {
                NSUserDefaults.StandardUserDefaults.SetBool(false, StorageKey.IsForceUpdate);
                return false;
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine("CheckForForceUpdate....." + ex.Message);
            return false;
        }
    }

public static string GetLatestVersion() { try { string appId = "1586153397"; // Replace with your App Store app ID string url = $"https://itunes.apple.com/lookup?id={appId}";

            using (HttpClient client = new HttpClient())
            {
                var response = client.GetStringAsync(url).GetAwaiter().GetResult();
                var json = JObject.Parse(response);
                var latestVersion = json["results"]?[0]?["version"]?.ToString();
                return latestVersion;
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine("GetLatestVersion..." + ex.Message);
            return null;
        }
    }

The value of latestVersion should 2.1 in my production app i am not able to get this hence i am not able to achieve Force Update functionality