Using Unity and CloudOnce,
I am implemeting cloudonce in my app withouth successfull, so I started a new project , just added the cloudonce and set up it correctly, but it crashed, After look up in the logs on logcats the error was
"Using Google Play games services requires a metadata tag with the name "com.google.android.gms.games.APP_ID" in the application tag of the manifest for com.xxx.xxx"
after further look in the manifest, I miss this
<meta-data android:name="com.google.android.gms.games.APP_ID"
android:value="@string/app_id" />
After look in the Plugins/Android/AndroidManifest there is no meta data with the app id either