Greetings,
it could be useful to allow Owners of HA instances (in their hosts/severs) to set a custom Firebase Cloud Messaging account to avoid the 500 Push messages limit.
I’m currently have more than 10 users in one of my HA instances but an average/max of 500/10=50 push notifications per-day-per-user could be very few.
Obliviouly it would need to change both Server and App sides accordingly.