Not visible Chromecast

Good afternoon and merry Christmas,

Very often I need to unplug/plug back the power cord of my Naim Nova to get it visible as a Chromecast device by an app (Deezer, Tunein) on my smartphone.
I also have 2 mu-so systems which are working fine with chromecast, no such issue with them.
Anything I need to do to fix this?
Regards