I have multiple OSMC 4K’s configured for Airplay but iOS devices only see one. Has anyone else experience with more than one OSMC system on a LAN running Airplay successfully? Dec 2018 release SW.
Try changing the device name under Settings and rebooting.
I used to use this frequently, one Pi 2 in the lounge and my older Pi 1 in the dining room, not tried for a while but yes, always used to work fine.