
Firebase provides Server API Key to identify your firebase app. To obtain your Server API Key, go to firebase console, select the project and go to settings, select Cloud Messaging tab and copy your Server key.


Put your AdMob App ID to res/value/ads.xml in the admob_app_id string tag.
Important: This step is required! Failure to add your app id in the string tag results in a crash with the message: The Google Mobile Ads SDK was initialized incorrectly.
Put your AppLovin SDK Key to res/value/ads.xml in the applovin_sdk_key string tag.