Arduino goes offline as soon as actuator turns on

When i turn on load device turns offline

Heres the code:

#define CAYENNE_DEBUG       
#define CAYENNE_PRINT Serial  
#include <CayenneMQTTESP8266Shield.h>
#include <Ultrasonic.h>
#include "DHT.h"
#define trigPin 12
#define echo 13
int led=LOW;
int led1=LOW;
#define DHTPIN 7
#define DHTTYPE DHT11  
DHT dht(DHTPIN, DHTTYPE);
Ultrasonic ultrasonic(12, 13);
char ssid[] = "";
unsigned long lastMillis = 0;
char wifiPassword[] = "";
char username[] = "";
char password[] = "";
char clientID[] = "";
#define EspSerial Serial
ESP8266 wifi(&EspSerial);
float time=0,distance=0;
void setup()
{
  pinMode(4, OUTPUT);
   pinMode(5, OUTPUT);
    pinMode(6, INPUT);
      pinMode(8, INPUT);
 pinMode(2, INPUT);
      pinMode(3, INPUT);

 pinMode(trigPin,OUTPUT);
 pinMode(echo,INPUT);
 Serial.begin(9600);
delay(10); 

  EspSerial.begin(115200);
 delay(10);
  Cayenne.begin(username, password, clientID, wifi, ssid, wifiPassword);

 }
  
void loop()
{
  Cayenne.loop();
    }

CAYENNE_OUT(1){      int duration,distance,percentage,heightTank,deviation;

  heightTank=12;
      deviation=2;
      digitalWrite(trigPin,HIGH);
      delayMicroseconds(1000);
      digitalWrite(trigPin,LOW);
      duration=pulseIn(echo,HIGH);
      distance=(duration/2)/29.1;
      percentage=100-(((distance-deviation)*100)/heightTank);
            Cayenne.virtualWrite(1,percentage);}
 CAYENNE_OUT(2){if(millis() - lastMillis > 500000) {
      lastMillis = millis();
          Cayenne.virtualWrite(2,dht.readHumidity());}}
           CAYENNE_OUT(3){if(millis() - lastMillis > 500000) {
      lastMillis = millis();
          Cayenne.virtualWrite(3,dht.readTemperature());}}
                   CAYENNE_IN(4) {
  int value = getValue.asInt();
  digitalWrite(4, value);
}
      CAYENNE_IN(5) {
  int value = getValue.asInt();
  digitalWrite(5, value);
  led=value;
}
 CAYENNE_OUT(6){if(millis() - lastMillis > 200) {
      lastMillis = millis();
          Cayenne.virtualWrite(6,analogRead(A0));}}
          CAYENNE_OUT(7){ if (digitalRead(6) == HIGH) 
  {
          Cayenne.virtualWrite(7,HIGH);}
  else 
  {
          Cayenne.virtualWrite(7,LOW);}}
          CAYENNE_OUT(8){ if (digitalRead(8) == HIGH) 
  {
          Cayenne.virtualWrite(8,HIGH);}
   else 
  {
          Cayenne.virtualWrite(8,LOW);}}

your code looks fine. can you just use the basic code and give it a try to find out whether actuator is causing the offline.

#define CAYENNE_DEBUG       
#define CAYENNE_PRINT Serial  
#include <CayenneMQTTESP8266Shield.h>


char ssid[] = "";
unsigned long lastMillis = 0;
char wifiPassword[] = "";
char username[] = "";
char password[] = "";
char clientID[] = "";
#define EspSerial Serial
ESP8266 wifi(&EspSerial);

void setup()
{
  pinMode(5, OUTPUT);

 Serial.begin(9600);
delay(10); 

  EspSerial.begin(115200);
 delay(10);
  Cayenne.begin(username, password, clientID, wifi, ssid, wifiPassword);

 }
  
void loop()
{
  Cayenne.loop();
    }
      CAYENNE_IN(5) {
  int value = getValue.asInt();
  digitalWrite(5, value);
}

What kind of load does your relay controls?