I have installed emby like explained before and it is working perfectly.
I only have one problem : I can't manage to access my emby server remotely.
I have forwarded the port 8096 and the port 8920 and I can't connect to my server.
With the OMV2.0 there was no problem, but with the 3.0 it doesn't work. Do you have an idea ? Plex is working perfectly.
I have installed KVM and I use a bridge.
with the 2.0 it was working fine with KVM.
Double check your advanced settings.
Ensure you enter your domain correctly in the Remote Access URL, (not sure the name), option.
Emby has a few options to connect remotely like Plex.
You can either connect to your server with Emby Connect or directly to your domain.
If you are using SSL, then you need to convert you cert to .pfk.
I think the instructions are in this thread.