Have you added the following settings to build.setting?
To use Admob with the new Corona you need to add it.
https://docs.coronalabs.com/plugin/admob/index.html
I had the same problem, but I solved it.
It should be an error in Admob initialization.
settings = { android = { applicationChildElements = { [[ \<meta-data android:name="com.google.android.gms.ads.APPLICATION\_ID" android:value="[YOUR\_ADMOB\_APP\_ID]"/\> -- replace with your app id. See: https://goo.gl/fQ2neu ]], } }, plugins = { ["plugin.admob"] = { publisherId = "com.coronalabs" }, }, }
This character does not change.
com.google.android.gms.ads.APPLICATION\_ID
Only here you need to change to your AdMob ID.
android:value="[YOUR\_ADMOB\_APP\_ID]"
If your build.setting is not set, please try it.