Connecting EF03157 Wi-Fi module to Arduino using a Logic Level Converter

Hi,

I have this Wi-Fi module: https://www.elecfreaks.com/wiki/index.php?title=ESP8266_Serial_Wifi_Module
And this LLC: https://www.velleman.eu/downloads/29/vma410_a4v01.pdf

I've been googling for hours, but I don't think I'm closer to properly connecting it. Here's how I got it setup at this moment: wifi module — ImgBB

Can anybody point me in the right direction? Also I think I'm misunderstanding what the LLC is supposed to do...

Thanks in advance.

Link to tutorial here