I have implemented firebase in a base project and receive respective notifications in the FirebaseMessagingService service, so all right, but then I implement a library that already has firebase but when it sends notifications from your server, if they reach my phone , but it does not enter the FirebaseMessagingService of the library, on the contrary it enters the FirebaseMessagingService of my app. If I remove all FCM from my project and only leave the library implemented if the notifications arrive to their own FirebaseMessagingService. I need the notification according to your "recipient" to reach your respective FirebaseMessagingService.