Before following this tutorial, you must have implemented Firebase in your project. If you have not already done so, please follow this tutorial: https://appzmotion.com/help-center/implementing-firebase/.
Follow the next steps to get the Server Key and the Sender ID from Firebase:
- Go to the Firebase Console (https://console.firebase.google.com/), enter to your project and click on the settings icon in the Project Overview section, then select Project settings.
- Go to the Cloud Messaging tab and here you can find your Firebase Server Key and your Firebase Sender ID.