Stripe Payment: System.Net.WebException: запрос был прерван: не удалось создать безопасный канал SSL/TLS

Я использую API отдыха С# с WebAPI 2.0; Очень мало запросов, генерирующих это исключение. Найдите следующие детали:

Версия .net: 4.0 Версия Stripe.net: 34.20.0.0 Журнал исключений:

2020-02-18 06:47:45.4533|DEBUG|Services.impl.StripePaymentChargeService|System.Net.WebException: The 

request was aborted: Could not create SSL/TLS secure channel.
   at System.Net.HttpWebRequest.EndGetRequestStream(IAsyncResult asyncResult, TransportContext& context)
   at System.Net.Http.HttpClientHandler.GetRequestStreamCallback(IAsyncResult ar)
2020-02-18 06:47:45.4533|DEBUG|Services.impl.StripePaymentChargeService|   at Stripe.SystemNetHttpClient.<MakeRequestAsync>d__21.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Stripe.StripeClient.<RequestAsync>d__25`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Stripe.Service`1.<RequestAsync>d__24`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()
   at Stripe.Service`1.Request[T](HttpMethod method, String path, BaseOptions options, RequestOptions requestOptions)
   at Stripe.ChargeService.Create(ChargeCreateOptions options, RequestOptions requestOptions)

Что я пробовал:

1. ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls
           | SecurityProtocolType.Tls11
           | SecurityProtocolType.Tls12
           | SecurityProtocolType.Ssl3;



2.  ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;

                System.Net.ServicePointManager.ServerCertificateValidationCallback +=
                        delegate (object sender, System.Security.Cryptography.X509Certificates.X509Certificate certificate,
                                               System.Security.Cryptography.X509Certificates.X509Chain chain,
                                               System.Net.Security.SslPolicyErrors sslPolicyErrors)
                        {
                            return true; 

                        };

3. ServicePointManager.Expect100Continue = true;
            ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;

            System.Net.ServicePointManager.ServerCertificateValidationCallback +=
                    delegate (object sender, System.Security.Cryptography.X509Certificates.X509Certificate certificate,
                                           System.Security.Cryptography.X509Certificates.X509Chain chain,
                                           System.Net.Security.SslPolicyErrors sslPolicyErrors)
                    {
                        return true; 
                    };

Полоса Создать код оплаты:

 stripeCharge = chargeService.Create(myCharge);

Я не могу обновить версию .net из-за зависимости от производства. Любая помощь будет оценена по достоинству.