Before starting. You’ll need to create a Firebase project. Learn how to do that here.
Head over to the Firebase Console and open your App project.
Add your Android app.
Select + Add app from the center pane. Then select the Android – droid icon.
Fill in your App Package Id and App Nickname. We normally enter “Android app” for the nickname.
You can ignore the Debug signing certificate.
Click Register App then download the configuration json file. You can skip through to the console again.
Jump over to your App’s submission page then the Notifications tab and upload the Json file you just downloaded to the Google Services Json field.
Add your iOS app.
Select + Add app from the center pane. Then select the iOS icon.
Fill in your App Package Id and App Nickname. We normally enter “iOS app” for the nickname.
You can ignore the App Store ID, however it is recommended.
Click Register App then download the configuration plist file. You can skip through to the console again.
Jump over to your App’s submission page then the Notifications tab and upload the Json file you just downloaded to the Google Services plist field.
Server API key
The server API key is required to allow our server to communicate with your Firebase project for things like sending push notifications.
To get the server API Key click on the Settings cog next to Project Overview in the Firebase sidebar. Then select Project settings.
Then select Cloud Messaging in the tabs along the top of the page.
Copy the Legacy server key from the page into Server API Key in your 3D Issue App’s notification settings.