IOT project using thingspeake and mcuode esp 8266

hi every one I'm try to do iot project from this link this link and my code is

#include <DHT.h>  // Including library for dht

#include <ESP8266WiFi.h>

String apiKey = "80ICOTKOF07YJJX4";     //  Enter your Write API key from ThingSpeak

const char *ssid =  "Hussam";     // replace with your wifi ssid and wpa2 key
const char *pass =  "0GJHEA4D";
const char* server = "api.thingspeak.com";

#define DHTPIN 0          //pin where the dht11 is connected

DHT dht(DHTPIN, DHT11);

WiFiClient client;

void setup() 
{
       Serial.begin(115200);
       delay(10);
       dht.begin();

       Serial.println("Connecting to ");
       Serial.println(ssid);


       WiFi.begin(ssid, pass);

      while (WiFi.status() != WL_CONNECTED) 
     {
            delay(500);
            Serial.print(".");
     }
      Serial.println("");
      Serial.println("WiFi connected");

}

void loop() 
{

      float h = dht.readHumidity();
      float t = dht.readTemperature();

              if (isnan(h) || isnan(t)) 
                 {
                     Serial.println("Failed to read from DHT sensor!");
                      return;
                 }

                         if (client.connect(server,80))   //   "184.106.153.149" or api.thingspeak.com
                      {  

                             String postStr = apiKey;
                             postStr +="&field1=";
                             postStr += String(t);
                             postStr +="&field2=";
                             postStr += String(h);
                             postStr += "\r\n\r\n";

                             client.print("POST /update HTTP/1.1\n");
                             client.print("Host: api.thingspeak.com\n");
                             client.print("Connection: close\n");
                             client.print("X-THINGSPEAKAPIKEY: "+apiKey+"\n");
                             client.print("Content-Type: application/x-www-form-urlencoded\n");
                             client.print("Content-Length: ");
                             client.print(postStr.length());
                             client.print("\n\n");
                             client.print(postStr);

                             Serial.print("Temperature: ");
                             Serial.print(t);
                             Serial.print(" degrees Celcius, Humidity: ");
                             Serial.print(h);
                             Serial.println("%. Send to Thingspeak.");
                        }
          client.stop();

          Serial.println("Waiting...");

  // thingspeak needs minimum 15 sec delay between updates, i've set it to 30 seconds
  delay(10000);
}

and I'm getting

Executable segment sizes:


IROM   : 243992          - code in flash         (default or ICACHE_FLASH_ATTR) 


IRAM   : 27868   / 32768 - code in IRAM          (ICACHE_RAM_ATTR, ISRs...) 


DATA   : 1268  )         - initialized variables (global, static) in RAM/HEAP 


RODATA : 1092  ) / 81920 - constants             (global, static) in RAM/HEAP 


BSS    : 25048 )         - zeroed variables      (global, static) in RAM/HEAP 


Sketch uses 274220 bytes (26%) of program storage space. Maximum is 1044464 bytes.
Global variables use 27408 bytes (33%) of dynamic memory, leaving 54512 bytes for local variables. Maximum is 81920 bytes.
esptool.py v2.8
Serial port COM7
Connecting....
Chip is ESP8266EX
Features: WiFi
Crystal is 26MHz
MAC: 84:0d:8e:a4:77:12
Uploading stub...
Running stub...
Stub running...
Configuring flash size...
Auto-detected Flash size: 4MB
Compressed 278368 bytes to 202928...

Writing at 0x00000000... (7 %)
Writing at 0x00004000... (15 %)
Writing at 0x00008000... (23 %)
Writing at 0x0000c000... (30 %)
Writing at 0x00010000... (38 %)
Writing at 0x00014000... (46 %)
Writing at 0x00018000... (53 %)
Writing at 0x0001c000... (61 %)
Writing at 0x00020000... (69 %)
Writing at 0x00024000... (76 %)
Writing at 0x00028000... (84 %)
Writing at 0x0002c000... (92 %)
Writing at 0x00030000... (100 %)
Wrote 278368 bytes (202928 compressed) at 0x00000000 in 17.9 seconds (effective 124.4 kbit/s)...
Hash of data verified.

Leaving...
Hard resetting via RTS pin...

and I get nothing at the cloud fields I look for this on the internet but all the answer says that's not a problem but they never give me a clear solution
the connection is exactly the same in link I just want to knew what's the issue is about the code or the hardware and how to fix it or how to make my code work