Notiffication problem

Hi!

I am not receiving push notifications on firebase (custom app) and traccar client (default app), I have not changed any parameter about 6 months ago,
what can it be due to?

Regards!

Have you done any troubleshooting? Like check device tokens etc.

I preferred to search the forum first if there was any known issue, then ask directly. Now I will check the tokens. Regards!