Why is admob ad unit Frequency capping not working?

问题

I set two impressions per minute per user but it doesn't work. Ads keep showing every time. [IMAGE] https://i.imgsafe.org/95d5e259bf.png

on admob site they say : A change to frequency capping, such as changing the cap from two to three, can take up to a day to take effect.

But it has been more than TWO days since I applyed change to Frequency capping and it is not working ? Here is how I request ads :

private void requestNewInterstitial() {
    AdRequest adRequest = new AdRequest.Builder().addTestDevice("XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX").build();
    mInterstitialAd.loadAd(adRequest);
}

I use setTestDevice so real ads wont show app because impressions on real ads can get me banned.

回答1:

I was facing the same issue in Unity plugin and reported the same. Unfortunately as of now there is a bug in the ad serving of Admob hence ad capping do not work.

There is an open bug that's being investigated internally with frequency capping in AdMob.

As mentioned by Google engineer

回答2:

Please note the following:

A change to frequency capping, such as changing the cap from two to three, can take up to a day to take effect. A slight server delay can occasionally result in the frequency cap that you've set being exceeded.

Check it here Officially....

https://support.google.com/admob/answer/6244508?ctx=tltp&hl=en

来源：https://stackoverflow.com/questions/40817113/why-is-admob-ad-unit-frequency-capping-not-working