Roon stopped identifying my speakers via Chromecast, listed only under air play.
I’m using Synology NAS, just updated roon core
Dan try giving everything a restart including the Chromecast device and see if it finds it then.
This sometimes happens and a restart often helps
I have a similar problem, for a couple months Roon no longer sees my Pioneer VSX-LX 704 AVR’s Chromecast Built-in feature, only Airplay.
Other apps like tidal recognizes the Chromecast device, Roon app doesn’t.