Fabric won't let me link my Firebase app

Paul from Fabric here. My recommendation would be to unlink your app and try again.

You can unlink by using the following URL: https://fabric.io/remove_firebase_crashlytics?clientId=CLIENT_ID&projectId=PROJECT_ID

• CLIENT_ID is your Firebase Client ID. This begins with "android:" or "ios:" and is followed by either your package name (Android) or bundle ID (iOS)
• PROJECT_ID is your app’s containing Firebase project ID, which can be found by going to Project Settings. This is also present in the URL of your Firebase console, i.e. https://console.firebase.google.com/project/<projectId>

For example, with these values:

• clientId: ios:com.remove.crashlytics.1
• projectId: test-removing-crashlytics

The link becomes: https://fabric.io/remove_firebase_crashlytics?clientId=ios:com.remove.crashlytics.1&projectId=test-removing-crashlytics