Push Notifications custom app

Hi, I want to use traccar's native push notifications. I am using modified Traccar Manager. Integrate the mobile app with firebase, and I still don't get the notifications.
When I test with the Official Traccar Manager app it works.
I followed the steps indicated in the forum.
I correctly placed the google-services file, and compiled with google flavors. Anyone have any idea what could be wrong?

What's your server configuration? Have you configured firebase there?

In the server I indicated TRACCAR_KEY but not FIREBASE_KEY, because I only want to use the native traccar notifications. Is it necessary to indicate the firebase key anyway?.

<entry key='notificator.types'>web,mail,sms,traccar</entry>
<entry key='notificator.traccar.key'>*****************************</entry>

You can't use Traccar notifications with your own firebase account. You have to configure firebase option instead.

So, you should remove that setting and place:

<entry key='notificator.types'>web,mail,firebase</entry>
<entry key='notificator.firebase.key'>FIREBASE_KEY</entry>

Correct?

Yes, looks correct now.