I have recently upgraded to superfast broadband which involved putting in a new BT HomeHub 6 wireless router (I’m in UK). Unfortunately now roon core, situated on a sonictransporter, no longer sees any of the music on my NAS. Roon still plays fine through Tidal.
My system is Router > switch > sonictransporter (same switch) Microrendu. The NAS is a WDMYCLOUD which is attached to the router.