Thanks for engaging Anuj.
See this post: Airplay does not work unless I refresh Airplay service from the cloud app - #8 by mkp132
Indeed, on a fresh install (balena-cloud-balena-sound-raspberrypi3-2.80.3+rev1-v12.7.0), no wi-fi, the behavior documented in that thread manifests. Restarting the airplay service gets it up and running.
That thread suggests that the service does start - briefly. I didn’t experience that.
renen.