I created a new ad unit id about 4 hours ago and started using it in the release builds of my unreleased Android app. But all I get is an empty view and the following logcat output:
W/Ads: Received error HTTP response code: 400
W/Ads: There was a problem getting an ad response. ErrorCode: 0
W/Ads: Failed to load ad: 0
Since ad unit identifiers for other applications in the same AdMob account work - even if they are used in the application in question, the best explanation I can come up with is that the new identifier has not been activated or has been correctly propagated so far.
How long does this usually take or what am I missing?
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