Google Play: How to Opt in to App Signing
To opt-in to app signing on the Google Play store, follow these steps:
- Log in to Google Play http://play.google.com/apps/publish
- Select your app
- From the left side menu, go to "Setup" then "App Integrity"
- Select the "App Signing"
- Select "Use existing app signing key from Java KeyStore"
- Select "Upload private key" and upload the file provided by Client Support