C# 邮递API不起作用

我正在使用过去一年的邮递报价API，当我检查时，它运行良好

但现在它似乎不起作用了

它抛出了一个带有一些启用cookie和验证码的HTML文本的异常

我不明白我是否错过了一些邮递更新

这是我的代码

HttpWebRequest req = WebRequest.Create(new Uri("https://api.postmates.com/v1/customers/" + PostmatesCustomerId + "/delivery_quotes")) as HttpWebRequest;

            req.Method = "POST";
            req.ContentType = "application/x-www-form-urlencoded";
            req.Headers.Add("Authorization", "Basic " + Base64string);             

            StringBuilder paramz = new StringBuilder();
            paramz.Append("pickup_address=" + PickUpAddress + "&dropoff_address=" + DeliveryAddress);

            byte[] formData =
                UTF8Encoding.UTF8.GetBytes(paramz.ToString());
            req.ContentLength = formData.Length;

            // Send the request:
            using (Stream post = req.GetRequestStream())
            {
                post.Write(formData, 0, formData.Length);
            }
            string responseString = null;
            using (HttpWebResponse resp = req.GetResponse()
                                          as HttpWebResponse)
            {
                StreamReader reader =
                    new StreamReader(resp.GetResponseStream());
                responseString = reader.ReadToEnd();
            }

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若您不在美国，请尝试使用VPN作为测试的变通方法