As said above, do the station logos show in the apps and on the Atom when playing iRadio?
If they do, but when streaming the artwork doesn’t show in either the Innous or Naim apps, it must either be that the artwork isn’t there, or you have used a setting in the Zenith that is stopping artwork showing, if there is such a thing. Have you checked the metadata using dBpoweramp or something similar to ensure that artwork is there?
It’s unlikely anyone will be able to diagnose your problem with just this amount of information. It looks like you have too many unknowns in play. Did anything ever work? Start there. You have had some good suggestions; check the file for artwork, iRadio, etc. Who did you buy it from? Can they help?
The top picture shows the Atom working as it should. It suggests the Atom is fine.
The bottom picture suggests there is an issue with the Zenith settings. I suggest getting a trial version of Asset and putting it on your computer along with a couple of albums. Check that the album art is there and then stream to the Atom. If it all works, the issue is somehow in the Zenith and that’s where to look next.
The screen works fine on internet radio so confident the Atom is ok, but haven’t worked out why no artwork with my Innuos. A bit tied up with pesky work this week so will have a look at the weekend.
There must be some kind of setting as plenty of Ndx2, ND555 users must use Innuos servers. I did a search here but couldn’t find anything relevant.
Artwork aside the Atom with ATC 11’s sounds pretty damn good - a little surgery planned for the weekend with single wiring the 11’s and a search for some stands - yours always looked smart so may consider them!
Have you tried using the Naim app to control things? The photo you posted says that was the result from the Sense app. I suppose there could be a fault in the Atom that is restricted to the upnp input, while allowing iRadio to work. Maybe you need to contact Innuos.