NEED HELP - 12v LED strip with ESP32 and 12v 33.3Amps big power supply

[dst161]

Items used:
1. 240v AC to 12v 33.3Amps DC big power supply
2. 2811 LED Strip: 12v 5mts with 300 LEDs (60 led / 1.mtr)
3. ESP32 - WROOM development board
4. 12v to 5v LM2596-NR BUCK converter step down module

I have done everything as mentioned in the following video for my setup: https://youtu.be/zbhdH-qSANc

The only difference in my setup and the video is that in the video a 12v to 5v step down converter is used where as I have used a LM2596-NR BUCK converter to reduce the 12v coming from the big power supply down to 5v and then connected the +ve to VIN connector on ESP32 and -ve to GND connector.

I have connected the green (data) wire from the LED strip to D4 connector of the ESP32 board.

I have used the 0.13.3 WLED installed and installed it on ESP32 board from https://install.wled.me/ using the instructions.

After all this setup is done, I um able to connect to the ESP32 board over wi-fi using the app and changed the GPIO to 4 in the app.
(Screenshot of the app attached)

PLEASE HELP... DONT KNOW WHAT ELSE TO DO NOW.

[ozcar]

Maybe a level shifter is required between D4 and the strip, which you did not mention (sorry, I'm not going to watch a video to find out what you might or might not have done).