Remote push notifications via Firebase not working on TestFlight

Hi,
I have Remote Push notifications managed by cloud messaging in Firebase.
When I build my application from xCode, I do receive notifications on my device without issues and works as expected.
But devices that have installed the app through TestFlight do not seem to receive the notifications.

Is there a specific set up required to make it work on TestFlight and going ahead on App Store?
Any advice or feedback in this regard is greatly appreciated.

My versions:
react-native: 0.60.5
react-native-firebase: 5.6.0
Testing on iOS devices: iPhone 6s and 7 with iOS version 14.1
The issue seemed to be with usage of different bundle ID for Firebase and my project, thus causing issue with notification on device.
Once the bundle ID was corrected on my project, notifications started coming through.

https://docs.getui.com/getui/mobile/ios/apns/ refer to this website Create a P12 certificate and upload it to Firebase Create Firebase with multiple server keys and use Testflight for notifications

Remote push notifications via Firebase not working on TestFlight
 
 
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