Old blynk going to disconnect from server

i am using old blynk , but my esp 32 going to connect and disconnect to server , where wifi is connect and when disconnect all switch are going to off , help me in this project

 #include <IRremote.h>
#include <BlynkSimpleEsp32.h>
#include <AceButton.h>
using namespace ace_button;

BlynkTimer timer1;

// define the GPIO connected with Relays and switches
#define RelayPin1 23  //D23
#define RelayPin2 22  //D22
#define RelayPin3 21  //D21
#define RelayPin4 19  //D19
#define RelayPin5 18  //D18
#define RelayPin6 5   //D5
#define RelayPin7 25  //D25
#define RelayPin8 26  //D26

#define SwitchPin1 13  //D13
#define SwitchPin2 12  //D12
#define SwitchPin3 14  //D14
#define SwitchPin4 27  //D27
#define SwitchPin5 33  //D33
#define SwitchPin6 32  //D32
#define SwitchPin7 15  //D15
#define SwitchPin8 4   //D4

#define wifiLed     2   //D2
#define IR_RECV_PIN 35  //D35

#define VPIN_BUTTON_1    V1 
#define VPIN_BUTTON_2    V2
#define VPIN_BUTTON_3    V3 
#define VPIN_BUTTON_4    V4
#define VPIN_BUTTON_5    V5 
#define VPIN_BUTTON_6    V6
#define VPIN_BUTTON_7    V7 
#define VPIN_BUTTON_8    V8
#define VPIN_BUTTON_9    V9

int toggleState_1 = 1; //Define integer to remember the toggle state for relay 1
int toggleState_2 = 1; //Define integer to remember the toggle state for relay 2
int toggleState_3 = 1; //Define integer to remember the toggle state for relay 3
int toggleState_4 = 1; //Define integer to remember the toggle state for relay 4
int toggleState_5 = 1; //Define integer to remember the toggle state for relay 5
int toggleState_6 = 1; //Define integer to remember the toggle state for relay 6
int toggleState_7 = 1; //Define integer to remember the toggle state for relay 7
int toggleState_8 = 1; //Define integer to remember the toggle state for relay 8

int wifiFlag = 0;

IRrecv irrecv(IR_RECV_PIN);
decode_results results;

ButtonConfig config1;
AceButton button1(&config1);
ButtonConfig config2;
AceButton button2(&config2);
ButtonConfig config3;
AceButton button3(&config3);
ButtonConfig config4;
AceButton button4(&config4);
ButtonConfig config5;
AceButton button5(&config5);
ButtonConfig config6;
AceButton button6(&config6);
ButtonConfig config7;
AceButton button7(&config7);
ButtonConfig config8;
AceButton button8(&config8);

void handleEvent1(AceButton*, uint8_t, uint8_t);
void handleEvent2(AceButton*, uint8_t, uint8_t);
void handleEvent3(AceButton*, uint8_t, uint8_t);
void handleEvent4(AceButton*, uint8_t, uint8_t);
void handleEvent5(AceButton*, uint8_t, uint8_t);
void handleEvent6(AceButton*, uint8_t, uint8_t);
void handleEvent7(AceButton*, uint8_t, uint8_t);
void handleEvent8(AceButton*, uint8_t, uint8_t);

#define AUTH "xxxxxxxxx"                 // You should get Auth Token in the Blynk App.  
#define WIFI_SSID "xxxxxx"             //Enter Wifi Name
#define WIFI_PASS "xxxxxx"         //Enter wifi Password

void relayOnOff(int relay){

    switch(relay){
      case 1: 
             if(toggleState_1 == 1){
              digitalWrite(RelayPin1, LOW); // turn on relay 1
              toggleState_1 = 0;
              Serial.println("Device1 ON");
              }
             else{
              digitalWrite(RelayPin1, HIGH); // turn off relay 1
              toggleState_1 = 1;
              Serial.println("Device1 OFF");
              }
             delay(100);
      break;
      case 2: 
             if(toggleState_2 == 1){
              digitalWrite(RelayPin2, LOW); // turn on relay 2
              toggleState_2 = 0;
              Serial.println("Device2 ON");
              }
             else{
              digitalWrite(RelayPin2, HIGH); // turn off relay 2
              toggleState_2 = 1;
              Serial.println("Device2 OFF");
              }
             delay(100);
      break;
      case 3: 
             if(toggleState_3 == 1){
              digitalWrite(RelayPin3, LOW); // turn on relay 3
              toggleState_3 = 0;
              Serial.println("Device3 ON");
              }
             else{
              digitalWrite(RelayPin3, HIGH); // turn off relay 3
              toggleState_3 = 1;
              Serial.println("Device3 OFF");
              }
             delay(100);
      break;
      case 4: 
             if(toggleState_4 == 1){
              digitalWrite(RelayPin4, LOW); // turn on relay 4
              toggleState_4 = 0;
              Serial.println("Device4 ON");
              }
             else{
              digitalWrite(RelayPin4, HIGH); // turn off relay 4
              toggleState_4 = 1;
              Serial.println("Device4 OFF");
              }
             delay(100);
      break;
      case 5: 
             if(toggleState_5 == 1){
              digitalWrite(RelayPin5, LOW); // turn on relay 5
              toggleState_5 = 0;
              Serial.println("Device5 ON");
              }
             else{
              digitalWrite(RelayPin5, HIGH); // turn off relay 5
              toggleState_5 = 1;
              Serial.println("Device5 OFF");
              }
             delay(100);
      break;
      case 6: 
             if(toggleState_6 == 1){
              digitalWrite(RelayPin6, LOW); // turn on relay 6
              toggleState_6 = 0;
              Serial.println("Device6 ON");
              }
             else{
              digitalWrite(RelayPin6, HIGH); // turn off relay 6
              toggleState_6 = 1;
              Serial.println("Device6 OFF");
              }
             delay(100);
      break;
      case 7: 
             if(toggleState_7 == 1){
              digitalWrite(RelayPin7, LOW); // turn on relay 7
              toggleState_7 = 0;
              Serial.println("Device7 ON");
              }
             else{
              digitalWrite(RelayPin7, HIGH); // turn off relay 7
              toggleState_7 = 1;
              Serial.println("Device7 OFF");
              }
             delay(100);
      break;
      case 8: 
             if(toggleState_8 == 1){
              digitalWrite(RelayPin8, LOW); // turn on relay 8
              toggleState_8 = 0;
              Serial.println("Device8 ON");
              }
             else{
              digitalWrite(RelayPin8, HIGH); // turn off relay 8
              toggleState_8 = 1;
              Serial.println("Device8 OFF");
              }
             delay(100);
      break;
      default : break;      
      }  
}

void all_SwitchOff(){
  toggleState_1 = 1; digitalWrite(RelayPin1, toggleState_1); Blynk.virtualWrite(VPIN_BUTTON_1, toggleState_1); delay(100);
  toggleState_2 = 1; digitalWrite(RelayPin2, toggleState_2); Blynk.virtualWrite(VPIN_BUTTON_2, toggleState_2); delay(100);
  toggleState_3 = 1; digitalWrite(RelayPin3, toggleState_3); Blynk.virtualWrite(VPIN_BUTTON_3, toggleState_3); delay(100);
  toggleState_5 = 1; digitalWrite(RelayPin5, toggleState_5); Blynk.virtualWrite(VPIN_BUTTON_5, toggleState_5); delay(100);
  toggleState_6 = 1; digitalWrite(RelayPin6, toggleState_6); Blynk.virtualWrite(VPIN_BUTTON_6, toggleState_6); delay(100);
  toggleState_7 = 1; digitalWrite(RelayPin7, toggleState_7); Blynk.virtualWrite(VPIN_BUTTON_7, toggleState_7); delay(100);
  toggleState_8 = 1; digitalWrite(RelayPin8, toggleState_8); Blynk.virtualWrite(VPIN_BUTTON_8, toggleState_8); delay(100);
}

void ir_remote(){
  if (irrecv.decode(&results)) {
      switch(results.value){
          case 0x80BF49B6:  relayOnOff(1); Blynk.virtualWrite(VPIN_BUTTON_1, toggleState_1); break;
          case 0x80BFC936:  relayOnOff(2); Blynk.virtualWrite(VPIN_BUTTON_2, toggleState_2); break;
          case 0x80BF33CC:  relayOnOff(3); Blynk.virtualWrite(VPIN_BUTTON_3, toggleState_3); break;
          case 0x80BF718E:  relayOnOff(4); Blynk.virtualWrite(VPIN_BUTTON_4, toggleState_4); break;
          case 0x80BFF10E:  relayOnOff(5); Blynk.virtualWrite(VPIN_BUTTON_5, toggleState_5); break;
          case 0x80BF13EC:  relayOnOff(6); Blynk.virtualWrite(VPIN_BUTTON_6, toggleState_6); break;
          case 0x80BF51AE:  relayOnOff(7); Blynk.virtualWrite(VPIN_BUTTON_7, toggleState_7); break;
          case 0x80BFD12E:  relayOnOff(8); Blynk.virtualWrite(VPIN_BUTTON_8, toggleState_8); break;
          case 0x80BF3BC4:  all_SwitchOff(); break;
          default : break;         
        }   
        //Serial.println(results.value, HEX);    
        irrecv.resume();   
  } 
}

// When App button is pushed - switch the state
BLYNK_WRITE(VPIN_BUTTON_1) {
  toggleState_1 = param.asInt();
  digitalWrite(RelayPin1, toggleState_1);
}

BLYNK_WRITE(VPIN_BUTTON_2) {
  toggleState_2 = param.asInt();
  digitalWrite(RelayPin2, toggleState_2);
}

BLYNK_WRITE(VPIN_BUTTON_3) {
  toggleState_3 = param.asInt();
  digitalWrite(RelayPin3, toggleState_3);
}

BLYNK_WRITE(VPIN_BUTTON_4) {
  toggleState_4 = param.asInt();
  digitalWrite(RelayPin4, toggleState_4);
}

BLYNK_WRITE(VPIN_BUTTON_5) {
  toggleState_5 = param.asInt();
  digitalWrite(RelayPin5, toggleState_5);
}

BLYNK_WRITE(VPIN_BUTTON_6) {
  toggleState_6 = param.asInt();
  digitalWrite(RelayPin6, toggleState_6);
}

BLYNK_WRITE(VPIN_BUTTON_7) {
  toggleState_7 = param.asInt();
  digitalWrite(RelayPin7, toggleState_7);
}

BLYNK_WRITE(VPIN_BUTTON_8) {
  toggleState_8 = param.asInt();
  digitalWrite(RelayPin8, toggleState_8);
}

BLYNK_WRITE(VPIN_BUTTON_9) {
  all_SwitchOff();
}

BLYNK_CONNECTED() {
  // Request the latest state from the server
  Blynk.syncVirtual(VPIN_BUTTON_1);
  Blynk.syncVirtual(VPIN_BUTTON_2);
  Blynk.syncVirtual(VPIN_BUTTON_3);
  Blynk.syncVirtual(VPIN_BUTTON_4);
  Blynk.syncVirtual(VPIN_BUTTON_5);
  Blynk.syncVirtual(VPIN_BUTTON_6);
  Blynk.syncVirtual(VPIN_BUTTON_7);
  Blynk.syncVirtual(VPIN_BUTTON_8);
}

void checkBlynkStatus() { // called every 3 seconds by SimpleTimer

  bool isconnected = Blynk.connected();
  if (isconnected == false) {
    wifiFlag = 1;
    digitalWrite(wifiLed, LOW); //Turn off WiFi LED
  }
  if (isconnected == true) {
    wifiFlag = 0;    
    digitalWrite(wifiLed, HIGH); //Turn on WiFi LED
  }
}
void setup()
{
  Serial.begin(9600);
  
  irrecv.enableIRIn(); // Start the receiver
  
  pinMode(RelayPin1, OUTPUT);
  pinMode(RelayPin2, OUTPUT);
  pinMode(RelayPin3, OUTPUT);
  pinMode(RelayPin4, OUTPUT);
  pinMode(RelayPin5, OUTPUT);
  pinMode(RelayPin6, OUTPUT);
  pinMode(RelayPin7, OUTPUT);
  pinMode(RelayPin8, OUTPUT);

  pinMode(wifiLed, OUTPUT);

  pinMode(SwitchPin1, INPUT_PULLUP);
  pinMode(SwitchPin2, INPUT_PULLUP);
  pinMode(SwitchPin3, INPUT_PULLUP);
  pinMode(SwitchPin4, INPUT_PULLUP);
  pinMode(SwitchPin5, INPUT_PULLUP);
  pinMode(SwitchPin6, INPUT_PULLUP);
  pinMode(SwitchPin7, INPUT_PULLUP);
  pinMode(SwitchPin8, INPUT_PULLUP);
  
  //During Starting all Relays should TURN OFF
  digitalWrite(RelayPin1, toggleState_1);
  digitalWrite(RelayPin2, toggleState_2);
  digitalWrite(RelayPin3, toggleState_3);
  digitalWrite(RelayPin4, toggleState_4);
  digitalWrite(RelayPin5, toggleState_5);
  digitalWrite(RelayPin6, toggleState_6);
  digitalWrite(RelayPin7, toggleState_7);
  digitalWrite(RelayPin8, toggleState_8);

  config1.setEventHandler(button1Handler);
  config2.setEventHandler(button2Handler);
  config3.setEventHandler(button3Handler);
  config4.setEventHandler(button4Handler);
  config5.setEventHandler(button5Handler);
  config6.setEventHandler(button6Handler);
  config7.setEventHandler(button7Handler);
  config8.setEventHandler(button8Handler);
  
  button1.init(SwitchPin1);
  button2.init(SwitchPin2);
  button3.init(SwitchPin3);
  button4.init(SwitchPin4);
  button5.init(SwitchPin5);
  button6.init(SwitchPin6);
  button7.init(SwitchPin7);
  button8.init(SwitchPin8);


  WiFi.begin(WIFI_SSID, WIFI_PASS);
  timer1.setInterval(2000L, checkBlynkStatus); // check if Blynk server is connected every 3 seconds
  Blynk.config(AUTH);
  delay(1000);

  Blynk.virtualWrite(VPIN_BUTTON_1, toggleState_1);
  Blynk.virtualWrite(VPIN_BUTTON_2, toggleState_2);
  Blynk.virtualWrite(VPIN_BUTTON_3, toggleState_3);
  Blynk.virtualWrite(VPIN_BUTTON_4, toggleState_4);
  Blynk.virtualWrite(VPIN_BUTTON_5, toggleState_5);
  Blynk.virtualWrite(VPIN_BUTTON_6, toggleState_6);
  Blynk.virtualWrite(VPIN_BUTTON_7, toggleState_7);
  Blynk.virtualWrite(VPIN_BUTTON_8, toggleState_8);
}

void loop()
{      
  ir_remote();
  
  button1.check();
  button2.check();
  button3.check();
  button4.check();
  button5.check();
  button6.check();
  button7.check();
  button8.check();

  if (WiFi.status() == WL_CONNECTED)
  {
    Blynk.run();
  }
  
  timer1.run(); // Initiates SimpleTimer
}

void button1Handler(AceButton* button, uint8_t eventType, uint8_t buttonState) {
  Serial.println("EVENT1");
  switch (eventType) {
    case AceButton::kEventPressed:
      Serial.println("kEventPressed");
      toggleState_1 = 0;
      Blynk.virtualWrite(VPIN_BUTTON_1, toggleState_1);   // Update Button Widget
      digitalWrite(RelayPin1, LOW);
      break;
    case AceButton::kEventReleased:
      Serial.println("kEventReleased");
      toggleState_1 = 1;
      Blynk.virtualWrite(VPIN_BUTTON_1, toggleState_1);   // Update Button Widget
      digitalWrite(RelayPin1, HIGH);
      break;
  }
}

void button2Handler(AceButton* button, uint8_t eventType, uint8_t buttonState) {
  Serial.println("EVENT2");
  switch (eventType) {
    case AceButton::kEventPressed:
      Serial.println("kEventPressed");
      toggleState_2 = 0;
      Blynk.virtualWrite(VPIN_BUTTON_2, toggleState_2);
      digitalWrite(RelayPin2, LOW);
      break;
    case AceButton::kEventReleased:
      Serial.println("kEventReleased");
      toggleState_2 = 1;
      Blynk.virtualWrite(VPIN_BUTTON_2, toggleState_2);
      digitalWrite(RelayPin2, HIGH);
      break;
  }
}

void button3Handler(AceButton* button, uint8_t eventType, uint8_t buttonState) {
  Serial.println("EVENT3");
  switch (eventType) {
    case AceButton::kEventPressed:
      Serial.println("kEventPressed");
      toggleState_3 = 0;
      Blynk.virtualWrite(VPIN_BUTTON_3, toggleState_3);
      digitalWrite(RelayPin3, LOW);
      break;
    case AceButton::kEventReleased:
      Serial.println("kEventReleased");
      toggleState_3 = 1;
      Blynk.virtualWrite(VPIN_BUTTON_3, toggleState_3);
      digitalWrite(RelayPin3, HIGH);
      break;
  }
}

void button4Handler(AceButton* button, uint8_t eventType, uint8_t buttonState) {
  Serial.println("EVENT4");
  switch (eventType) {
    case AceButton::kEventPressed:
      Serial.println("kEventPressed");
      toggleState_4 = 0;
      Blynk.virtualWrite(VPIN_BUTTON_4, toggleState_4);
      digitalWrite(RelayPin4, LOW);
      break;
    case AceButton::kEventReleased:
      Serial.println("kEventReleased");
      toggleState_4 = 1;
      Blynk.virtualWrite(VPIN_BUTTON_4, toggleState_4);
      digitalWrite(RelayPin4, HIGH);
      break;
  }
}

void button5Handler(AceButton* button, uint8_t eventType, uint8_t buttonState) {
  Serial.println("EVENT5");
  switch (eventType) {
    case AceButton::kEventPressed:
      Serial.println("kEventPressed");
      toggleState_5 = 0;
      Blynk.virtualWrite(VPIN_BUTTON_5, toggleState_5);
      digitalWrite(RelayPin5, LOW);
      break;
    case AceButton::kEventReleased:
      Serial.println("kEventReleased");
      toggleState_5 = 1;
      Blynk.virtualWrite(VPIN_BUTTON_5, toggleState_5);
      digitalWrite(RelayPin5, HIGH);
      break;
  }
}

void button6Handler(AceButton* button, uint8_t eventType, uint8_t buttonState) {
  Serial.println("EVENT6");
  switch (eventType) {
    case AceButton::kEventPressed:
      Serial.println("kEventPressed");
      toggleState_6 = 0;
      Blynk.virtualWrite(VPIN_BUTTON_6, toggleState_6);
      digitalWrite(RelayPin6, LOW);
      break;
    case AceButton::kEventReleased:
      Serial.println("kEventReleased");
      toggleState_6 = 1;
      Blynk.virtualWrite(VPIN_BUTTON_6, toggleState_6);
      digitalWrite(RelayPin6, HIGH);
      break;
  }
}

void button7Handler(AceButton* button, uint8_t eventType, uint8_t buttonState) {
  Serial.println("EVENT7");
  switch (eventType) {
    case AceButton::kEventPressed:
      Serial.println("kEventPressed");
      toggleState_7 = 0;
      Blynk.virtualWrite(VPIN_BUTTON_7, toggleState_7);
      digitalWrite(RelayPin7, LOW);
      break;
    case AceButton::kEventReleased:
      Serial.println("kEventReleased");
      toggleState_7 = 1;
      Blynk.virtualWrite(VPIN_BUTTON_7, toggleState_7);
      digitalWrite(RelayPin7, HIGH);
      break;
  }
}

void button8Handler(AceButton* button, uint8_t eventType, uint8_t buttonState) {
  Serial.println("EVENT8");
  switch (eventType) {
    case AceButton::kEventPressed:
      Serial.println("kEventPressed");
      toggleState_8 = 0;
      Blynk.virtualWrite(VPIN_BUTTON_8, toggleState_8);
      digitalWrite(RelayPin8, LOW);
      break;
    case AceButton::kEventReleased:
      Serial.println("kEventReleased");
      toggleState_8 = 1;
      Blynk.virtualWrite(VPIN_BUTTON_8, toggleState_8);
      digitalWrite(RelayPin8, HIGH);
      break;
  }
}```

Please edit your post and add triple backticks ( ``` ) before and after your whole sketch.

ok add

What you’ve added are not triple backticks.
Copy and paste the ones that @John93 provided, otherwise your unformatted code will be deleted.

Pete.

ok done

now what is the solution for my project , i am too much worried

You should read this…

https://docs.blynk.io/en/legacy-platform/legacy-articles/keep-your-void-loop-clean

You also appear to be missing…,

#include <WiFi.h>
#include <WiFiClient.h>

from your sketch.

Pete.

ok add it and inform you