Got this warning while publishing the app:
We’ve detected that your app is using an old version of the Google Play Developer API. From December 1 2019, versio
I had the same problem. I had to update google-services.
See https://firebase.google.com/support/release-notes/android#2019-08-22 : "The google-services plugin for Android (v4.3.1) is now available. This release removes calls to a deprecated API. For more information, refer to the Firebase Android SDK Release Notes."
Hope this helps you!