接入Admob激励视频，测试广告正常，正式广告加载失败

[626928256 (濑户一贵)]

日志为
I/Ads: Use AdRequest.Builder.addTestDevice(“XXXXXXXXXXXXXXXXXXXX”) to get test ads on this device.
I/Ads: Ad failed to load : 3
I/AudioManager: In isSpeakerphoneOn(), calling application: com.XXX.XXX
W/Ads: Not retrying to fetch app settings