Problem Accessing OMV GUI (NAS build)

I'm a newbie, so be kind.

Hardware: Geekworm NAS 2.0, Raspberry Pi 4b, Toshiba HDD from old laptop

OS: Headless Raspberry Pi Lite

Linux user

Using the following video: how to build a Raspberry Pi NAS.

Installed OMV using: wget -O - https://raw.githubusercontent.…tallScript/master/install | sudo bash

When type the Pi IP address into a browser to access the OMV GUI, get "This site can’t be reached IP ADDRESS took too long to respond"

I can access the Pi via ssh and have spent a long time looking for and trying solutions on the web.

Any help would be much appreciated. Thanks.

Thank you for your advice mischka. I have the Debian 12 version installed, so will start again and install Pi OS Legacy Lite.