Уведомления VOIP не работают на производственном сервере с помощью Asp. Net Web API

Question

Я отправляю уведомления VOIP pu sh на IOS устройствах с использованием ApnsConfiguration в Asp. Net Web API. Эти уведомления успешно отправляются на мой локальный компьютер. Но когда я развертываю код на живом сервере, то есть на сервере общего хостинга Plesk Godady, это не работает, и это вызывает исключение. Ниже приведено исключение:

"StatusCode": "Exception: System.Security.Cryptography.CryptographicException: Access denied.\r\n\r\n   at System.Security.Cryptography.CryptographicException.ThrowCryptographicException(Int32 hr)\r\n   at System.Security.Cryptography.X509Certificates.X509Utils._LoadCertFromBlob(Byte[] rawData, IntPtr password, UInt32 dwFlags, Boolean persistKeySet, SafeCertContextHandle& pCertCtx)\r\n   at System.Security.Cryptography.X509Certificates.X509Utils.LoadCertFromBlob(Byte[] rawData, IntPtr password, UInt32 dwFlags, Boolean persistKeySet, SafeCertContextHandle pCertCtx)\r\n   at System.Security.Cryptography.X509Certificates.X509Certificate.LoadCertificateFromBlob(Byte[] rawData, Object password, X509KeyStorageFlags keyStorageFlags)\r\n   at System.Security.Cryptography.X509Certificates.X509Certificate2..ctor(Byte[] rawData, String password, X509KeyStorageFlags keyStorageFlags)\r\n   at PushSharp.Apple.ApnsConfiguration..ctor(ApnsServerEnvironment serverEnvironment, Byte[] certificateData, String certificateFilePwd, Boolean validateIsApnsCertificate)\r\n   at foneMeService.Controllers.PushKitController.SendVOIPNotification(String dT) in D:\\QRTS\\Clients\\iOS fone.me\\FoneMe\\foneMeAPI\\foneMeService\\Controllers\\PushKitController.cs:line 54\r\n   at foneMeService.Controllers.PushKitController.<SendVoipNotification>d__0.MoveNext() in D:\\QRTS\\Clients\\iOS fone.me\\FoneMe\\foneMeAPI\\foneMeService\\Controllers\\PushKitController.cs:line 34",
    "Data": "Access denied.\r\n"

Мой код указан ниже:

public void SendVOIPNotification(string dT)
        {
            string pushkitVOIPCertificate = WebConfigurationManager.AppSettings["PushKitVOIPCertificate"];
            string pushkitVOIPCertificatePassword = WebConfigurationManager.AppSettings["PushKitVOIPCertificatePassword"];
            var p12fileName = HostingEnvironment.MapPath(@pushkitVOIPCertificate);
            //string p12fileName = "C:\\webroot\\PKI\\myCertificate.p12";
            string p12password = pushkitVOIPCertificatePassword;
            string deviceToken = dT;
            var appleCert = System.IO.File.ReadAllBytes(p12fileName);
            var config = new PushSharp.Apple.ApnsConfiguration(ApnsConfiguration.ApnsServerEnvironment.Production, appleCert, p12password,false);
            config.ValidateServerCertificate = false;
            var logger = NLog.LogManager.GetCurrentClassLogger();

            var apnsBroker = new ApnsServiceBroker(config);
            apnsBroker.OnNotificationFailed += (notification, aggregateEx) =>
            {
                aggregateEx.Handle(ex =>
                {
                    // See what kind of exception it was to further diagnose           
                    if (ex is ApnsNotificationException)
                    {
                        var notificationException = (ApnsNotificationException)ex;
                        // Deal with the failed notification               
                        var apnsNotification = notificationException.Notification;
                        var statusCode = notificationException.ErrorStatusCode;
                        Console.WriteLine("Apple Notification Failed: ID={" + apnsNotification.Identifier + "}, Code={" + statusCode + "}");
                    }
                    else
                    {
                        // Inner exception might hold more useful information like an ApnsConnectionException   
                        Console.WriteLine("Notification Failed for some unknown reason : {" + ex.InnerException + "}");
                    }
                    // Mark it as handled           
                    return true;
                });
            };
            dynamic jsonObject = new JObject();
            jsonObject.DialerId = DateTime.Now;
            jsonObject.ReceiverId = "Me Against the world";
            jsonObject.DialerNumber = 1995;
            jsonObject.ReceiverNumber = "2Pac";
            jsonObject.NotificationType = "2Pac";
            jsonObject.CallType = "2Pac";
            jsonObject.CallDate = "2Pac";
            jsonObject.Status = "2Pac";
            jsonObject.ChannelName = "2Pac";
            jsonObject.DeviceToken = "2Pac";
            jsonObject.CallLogStatusId = "2Pac";
            jsonObject.DialerImageUrl = "2Pac";


            CallConnectResponse result = new CallConnectResponse();
            result.DialerId =Guid.NewGuid();
            result.ReceiverId = Guid.NewGuid();
            result.DialerNumber = "dassada";
            result.ReceiverNumber = "4334343";
            result.NotificationType = "CLLCN";
            result.CallType = "NT";
            result.Status = "NT";
            result.ChannelName = "NT";
            result.DeviceToken = "NT";
            result.CallConnectionId = "232";
            result.DialerImageUrl = "https://www.image.com";
            var Data = new Dictionary<string, string>()
                    {
                     { "DialerId", 1+"" },
                     { "ReceiverId", 2+"" },
                     { "DialerNumber", result.DialerNumber+"" },
                     { "ReceiverNumber", result.ReceiverNumber+"" },
                     { "NotificationType", result.NotificationType+"" },
                     { "CallType", result.CallType+"" },
                     { "CallDate", result.CallDate+"" },
                     { "Status", result.Status+"" },
                     { "ChannelName", result.ChannelName+"" },
                     { "DeviceToken", result.DeviceToken+"" },
                     { "CallLogStatusId", result.CallConnectionId+"" },
                     { "DialerImageUrl", result.DialerImageUrl },
                     };
            apnsBroker.Start();
            apnsBroker.QueueNotification(new ApnsNotification
            {
                DeviceToken = deviceToken,
                //Payload = jsonObject
                Payload = JObject.Parse("{\"aps\":{\"alert\":\"" + "Hi,, This Is a Sample Push Notification For IPhone.." + "\",\"badge\":1,\"DialerId\":\"" + result.DialerId + "\",\"ReceiverId\":\"" + result.ReceiverId + "\",\"DialerNumber\":\"" + result.DialerNumber + "\",\"ReceiverNumber\":\"" + result.ReceiverNumber + "\",\"NotificationType\":\"" + result.NotificationType + "\",\"CallType\":\"" + result.CallType + "\",\"CallDate\":\"" + DateTime.Now.ToShortDateString() + "\",\"Status\":\"" + result.Status + "\",\"ChannelName\":\"" + result.ChannelName + "\",\"DeviceToken\":\"" + result.DeviceToken + "\",\"CallLogStatusId\":" + result.CallConnectionId + ",\"DialerImageUrl\":\"" + result.DialerImageUrl + "\",\"sound\":\"default\"}}")
               // Payload = JObject.Parse("{\"aps\":{\"alert\":\"" + "Hi,, This Is a Sample Push Notification For IPhone.." + "\",\"badge\":1,\"DialerId\":" + 2 + ",\"ReceiverId\":1,\"DialerNumber\":2,\"ReceiverNumber\":2,\"NotificationType\":\"" + "Mango" + "\",\"CallType\":2,\"CallDate\":2,\"Status\":2,\"ChannelName\":2,\"DeviceToken\":2,\"CallLogStatusId\":2,\"DialerImageUrl\":2,\"sound\":\"default\"}}")
            });
            var val = "";
            apnsBroker.OnNotificationFailed += (notification, aggregateEx) =>
            {
                aggregateEx.Handle(ex =>
                {
                    // See what kind of exception it was to further diagnose
                    if (ex is ApnsNotificationException)
                    {
                        var notificationException = (ApnsNotificationException)ex;

                        // Deal with the failed notification
                        var apnsNotification = notificationException.Notification;
                        var statusCode = notificationException.ErrorStatusCode;

                        Console.WriteLine($"Apple Notification Failed: ID={apnsNotification.Identifier}, Code={statusCode}");
                    }
                    else
                    {
                        // Inner exception might hold more useful information like an ApnsConnectionException          
                        Console.WriteLine($"Apple Notification Failed for some unknown reason : {ex.InnerException}");
                    }
                    // Mark it as handled
                    return true;
                });
            };
            apnsBroker.OnNotificationSucceeded += (notification) =>
            {
                val = "send";
                Console.WriteLine("Apple Notification Sent!");
            };
            //apnsBroker.OnNotificationFailed += (ss,sasd) => {
            //    val = "failed";
            //    Console.WriteLine("Apple Notification Sent!");
            //};

            apnsBroker.Stop();

        }

Не могли бы вы мне помочь, что насчет исключения, и как я могу настроить VOIP notifiacatiosn также на живом сервере .