First Custom IoT Cloud sketch fails to connect to MQTT Broker

Hi everyone,

I am trying to learn the IoT Cloud. I have an Arduino MKR WiFi 1010. I followed the tutorial by DroneBotWorkshop (Getting Started with the Arduino IoT Cloud), and everything worked well with that sketch. I took a sketch I had from this silly robot (A robot friend - Arduino Project Hub) and tried to edit it to allow me to activate the robot's wave via an IoT Dashboard button. Normally, the robot waves with a servo if you wave in front of its distance sensor.

Here is my code:

#include "arduino_secrets.h"
#include "thingProperties.h"
#include <Servo.h>
#define trig 11
#define echo 10
#define MAX_DISTANCE 200

Servo servo;

unsigned long durata;
float distanza;
float timeOut = MAX_DISTANCE * 60;
int soundVelocity = 340;

void setup() {
Serial.begin(9600);
delay(1500);
ArduinoCloud.begin(ArduinoIoTPreferredConnection);
setDebugMessageLevel(4);
ArduinoCloud.printDebugInfo();
servo.attach(9);
pinMode(trig, OUTPUT);
pinMode(echo, INPUT);
}

void loop() {
ArduinoCloud.update();
distanza = getSonar();

if(distanza < 30 && distanza != 0) {
sayHello();
}
}

void onWaveChange() {
sayHello();
}

void sayHello() {
for(int j=0; j<2; j++) {
for(int i= 40; i<100; i++) {
servo.write(i);
delay(10);
}
for(int i= 100; i>=40; i--) {
servo.write(i);
delay(10);
}
}
}

float getSonar() {
unsigned long pingTime;
float distance;
digitalWrite(trig, HIGH);
delayMicroseconds(10);
digitalWrite(trig, LOW);
pingTime = pulseIn(echo, HIGH, timeOut);
distance = (float)pingTime * soundVelocity / 2 / 10000;
return distance;
}

And the thingProperties.h part:

// Code generated by Arduino IoT Cloud, DO NOT EDIT.

#include <ArduinoIoTCloud.h>
#include <Arduino_ConnectionHandler.h>

const char THING_ID = XXXXXXXXXXXXXXX;

const char SSID = SECRET_SSID; // Network SSID (name)
const char PASS = SECRET_PASS; // Network password (use for WPA, or use as key for WEP)

void onWaveChange();

bool wave;

void initProperties(){

ArduinoCloud.setThingId(THING_ID);
ArduinoCloud.addProperty(wave, READWRITE, ON_CHANGE, onWaveChange);

}

WiFiConnectionHandler ArduinoIoTPreferredConnection(SSID, PASS);

When I use this code, my Arduino has a hard time communicating with the MQTT Broker per the Serial Monitor:

***** Arduino IoT Cloud - configuration info *****
Device ID: XXXXXXXXXXXXXXXXXXXX
Thing ID:
MQTT Broker: mqtts-sa.iot.arduino.cc:8883
WiFi.status(): 0
Current WiFi Firmware: 1.4.8
Connected to "XXXXXXXXXXXX"
ArduinoIoTCloudTCP::handle_ConnectMqttBroker could not connect to mqtts-sa.iot.arduino.cc:8883
ArduinoIoTCloudTCP::handle_ConnectMqttBroker 1 connection attempt at tick time 17704

The board constantly restarts after encountering this MQTT Broker issue. I did not have the problem with the MQTT Broker with the DroneBotWorkshop tutorial. I pretty much copied the pertinent IoT Cloud sections from the working tutorial sketch to my robot's sketch to make it work with the cloud service. Any thoughts on what I may be doing wrong?