问题
I already tried this and this but I am not using multiple WebViews. Also, my account is not new and ads are showing in other lower versions of Android.
W/Ads: There was a problem getting an ad response. ErrorCode: 0
W/Ads: Failed to load ad: 0
回答1:
Clearing google play services cache and data seems to fix this for me but it does come back after redeploying an apk to my device in either debug mode or not debug mode using Android Studio.
Not really happy about having to clear play services data. Blew away my BT connection to my Wear OS watch which may require a factory reset on the watch to re-pair!
来源：https://stackoverflow.com/questions/52361457/admob-ad-stopped-working-in-android-pie-api28