Install Plex using ssh?

Hey!

I have the Wireless pro but when attempting to install Plex server, it fails because its saying that the disk is not connected to the internet. That’s nonsense and the disk is connected to my home network and is able to reach the internet (when connected to the dis via ssh, I can ping whatever address so there is internet connectivity but some crappy UI check fails…).
So the question is - is there any way how to install the plex package without the WD UI, but rather do it from the terminal?

Thanks!