Try to change firebase Authentication

Hi. My name is Mattia, from Italy.

The boss of my company ask me to modify the code of Rocket.Chat.ReactNative. He wants change the Firebase linked to the application so that user data remain registered in our database.

I followed the guidelines from firebase console. I downloaded the google-services.json and replaced on android project. I have enabled the email login method.

The app works but when try to register a new user nothing appear in the list of User in Authentication.

Please help me. how do I make it work?