New Installation Raspberry Pi 4 - loop failure?

I’m trying to install images from here https://www.home-assistant.io/hassio/installation/ on to a new RPi4 (actually have tried two, with different uSD cards). I think I am getting stuck somewhere in the installation - a loop - on both devices. I have tried both the 32bit image and the 64bit image … same behaviour. Can anyone tell what is going on? The Pi is plugged into a Wired network port (which works!) … I don’t want to use WiFi … as far as I can tell the Pi is not picking up an IP address on with Wired Port …