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Go to AdminCP > Apps > Installed > Mobile API > Settings
- Configure Firebase Sender ID setting with the server Sender Id of your Firebase project. You can get the sender id by going to Firebase App console, then go to Project Settings > Cloud Messaging
- In case you are using our IM Hosting service, you can configure 904356105667 to Firebase Sender ID setting
In case IM server set up on your self-hosting
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