Enable Push Notifications (Firebase)

Hello, I did the following steps to enable push notifications, but it was not successful.

1 - Recompile the APK with my firebase

Pictures of the program in android studio:
https://i.imgur.com/H3Ziqrs.png
https://i.imgur.com/79PJkYm.png
https://i.imgur.com/AZvGi5q.png

Build Config, flavors and build type:
https://i.imgur.com/yPvZzLk.png

2- Add key in the XML config?
https://i.imgur.com/N54Rh0P.png

And....

Atributes are clean:
https://i.imgur.com/NdcigRo.png

Push Notifications not working....

Can someone help me please?

Which flavor have you compiled?