Android studio after renaming package it throws No matching client found

I had the same issue when I renamed my package. I created a new Firebase project from firebase console and downloaded the new google-services.json file from the firebase console and replaced it with the old one but still got the same error. Then I checked my build.gradle (App) file it still had the previous package name so I renamed it with the new package name and it worked.

You have added the Google Play Services plugin to the project, which reads from the google-services.json found in your app module.

The google-services.json contains service configuration data, such as Google Project ID, application package name, etc..

Since the application package name is also stored in that json, it will not match anymore, so you have to create a new application in your Firebase console, and export the new configuration json.

Then replace the google-services.json in your project with the one you have generated.

Look for the names of package and created project in firebase must be same