No ads appearing even though my account is new in Admob. I made sure of the good steps, but no ads are displayed. Have Google policies changed? Is there a suggestion or solution to this problem?
<meta-data
android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value="ca-app-pub-xxxxxxxxxxxxxxxx~xxxxxxxx"/>
# main_activity.xml
<com.google.android.gms.ads.AdView
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:id="@+id/adView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true"
ads:adSize="BANNER"
ads:adUnitId="ca-app-pub-xxxxxxxxx/xxxxxxxx">
</com.google.android.gms.ads.AdView>