Arduino Uno R3 compatibility with Arduino Cloud

Just purchased an Arduino Uno R3 board not too long ago but having a lot of compatibility issues when setting up.
I have Arduino code prepared and all the necessary parts for the project being built but experiencing compatibility issues with the main Arduino board.
Even when the board is connected as a third party device and the device is recognized, other forms of compatibility issues arises and modules do not sync.
Assistance would be appreciated.

Hi @fabiyij2. The Uno is not compatible with Arduino IoT Cloud, so this is the normal and expected result.

These are the boards listed as compatible with Arduino IoT Cloud:

You can use the Uno with Arduino Web Editor if you like:
https://create.arduino.cc/editor
Or you can use it with the desktop Arduino IDE:

I am still having server issue when using the web editor, also modules connecting to the Arduino board are not responding even with the lights on the board indicating it is connected

I can see from your screenshot that there was at least one successful compilation. So I think this was maybe an intermittent issue. Please try it again now to see whether the problem has already been resolved.

Please post your full sketch.

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/*
#include <SPI.h>
#include <MFRC522.h>

#define SS_PIN 10
#define RST_PIN 9
#define LED_G 5 //define green LED pin
#define LED_R 4 //define red LED
#define RELAY 3 //relay pin
#define BUZZER 2 //buzzer pin
#define ACCESS_DELAY 2000
#define DENIED_DELAY 1000
MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.

void setup()
{
Serial.begin(9600); // Initiate a serial communication
SPI.begin(); // Initiate SPI bus
mfrc522.PCD_Init(); // Initiate MFRC522
pinMode(LED_G, OUTPUT);
pinMode(LED_R, OUTPUT);
pinMode(RELAY, OUTPUT);
pinMode(BUZZER, OUTPUT);
noTone(BUZZER);
digitalWrite(RELAY, LOW);
Serial.println("Put your card to the reader...");
Serial.println();

}
void loop()
{
// Look for new cards
if ( ! mfrc522.PICC_IsNewCardPresent())
{
return;
}
// Select one of the cards
if ( ! mfrc522.PICC_ReadCardSerial())
{
return;
}
//Show UID on serial monitor
Serial.print("UID tag :");
String content= "";
byte letter;
for (byte i = 0; i < mfrc522.uid.size; i++)
{
Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
Serial.print(mfrc522.uid.uidByte[i], HEX);
content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
content.concat(String(mfrc522.uid.uidByte[i], HEX));
}
Serial.println();
Serial.print("Message : ");
content.toUpperCase();
if (content.substring(1) == "83 23 38 BB") //change here the UID of the card/cards that you want to give access
{
Serial.println("Authorized access");
Serial.println();
delay(500);
digitalWrite(RELAY, HIGH);
digitalWrite(LED_G, HIGH);
delay(ACCESS_DELAY);
digitalWrite(RELAY, LOW);
digitalWrite(LED_G, LOW);
}

else {
Serial.println(" Access denied");
digitalWrite(LED_R, HIGH);
tone(BUZZER, 300);
delay(DENIED_DELAY);
digitalWrite(LED_R, LOW);
noTone(BUZZER);
}
}

*/

void setup() {

}
/*
#include <SPI.h>
#include <MFRC522.h>

#define SS_PIN 10
#define RST_PIN 9
#define LED_G 5 //define green LED pin
#define LED_R 4 //define red LED
#define RELAY 3 //relay pin
#define BUZZER 2 //buzzer pin
#define ACCESS_DELAY 2000
#define DENIED_DELAY 1000
MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.

void setup()
{
Serial.begin(9600); // Initiate a serial communication
SPI.begin(); // Initiate SPI bus
mfrc522.PCD_Init(); // Initiate MFRC522
pinMode(LED_G, OUTPUT);
pinMode(LED_R, OUTPUT);
pinMode(RELAY, OUTPUT);
pinMode(BUZZER, OUTPUT);
noTone(BUZZER);
digitalWrite(RELAY, LOW);
Serial.println("Put your card to the reader...");
Serial.println();

}
void loop()
{
// Look for new cards
if ( ! mfrc522.PICC_IsNewCardPresent())
{
return;
}
// Select one of the cards
if ( ! mfrc522.PICC_ReadCardSerial())
{
return;
}
//Show UID on serial monitor
Serial.print("UID tag :");
String content= "";
byte letter;
for (byte i = 0; i < mfrc522.uid.size; i++)
{
Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
Serial.print(mfrc522.uid.uidByte[i], HEX);
content.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
content.concat(String(mfrc522.uid.uidByte[i], HEX));
}
Serial.println();
Serial.print("Message : ");
content.toUpperCase();
if (content.substring(1) == "83 23 38 BB") //change here the UID of the card/cards that you want to give access
{
Serial.println("Authorized access");
Serial.println();
delay(500);
digitalWrite(RELAY, HIGH);
digitalWrite(LED_G, HIGH);
delay(ACCESS_DELAY);
digitalWrite(RELAY, LOW);
digitalWrite(LED_G, LOW);
}

else {
Serial.println(" Access denied");
digitalWrite(LED_R, HIGH);
tone(BUZZER, 300);
delay(DENIED_DELAY);
digitalWrite(LED_R, LOW);
noTone(BUZZER);
}
}

*/

void setup() {

}

void loop() {

}

void loop() {

}

**type or paste code here**