Blynk app not activating the relay

Need Help With My Project
1

hello, I need help with my project since whenever i turn on my blynk app that is attach to my esp32, it doesnt turn on the the relay which controls the waterpump .

here is my coding=

//Tech Trends Shameer
//Control Water Pump Using Blynk 2.0

#define BLYNK_TEMPLATE_ID ""
#define BLYNK_TEMPLATE_NAME ""
#define BLYNK_AUTH_TOKEN "



#define BLYNK_PRINT Serial
#include <WiFi.h> 
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
 

char auth[] = BLYNK_AUTH_TOKEN;

char ssid[] = " " ;  
char pass[] = "";  

int relaypin = 4;  //Connect to Pin D4 in ESP32
void setup()
{     
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);    
  pinMode(relaypin,OUTPUT);
 
}

void loop()
{
  Blynk.run(); 
 }

Source=https://youtu.be/mPyeAGKkBVs?si=M6hYfqgIY8U4-3kK

2

@Ali2 Please edit your post, using the pencil icon at the bottom, and add triple backticks at the beginning and end of your code so that it displays correctly.
Triple backticks look like this:
```

Copy and paste these if you can’t find the correct symbol on your keyboard.

Pete.

3

Also do i need to use the same relay as the guy uses in the video to make my project work since im using a really different relay or is it the code that is incorrect?
Im using 3V relay

4

What does your serial monitor show.
Copy the text from your serial monitor and paste it, with triple backticks. Do not post screenshots or serial output without triple backticks, these will be deleted.

Pete.