This happened to me. I've had 8 months with this limitation being applied repeatedly. So I sent an extrajudicial notice to Google's office in my country, according to local laws, Google can't work here without support, after 1 month Google's lawyers responded with a list of recommendations I would need to do to regularize my Admob account, many things didn't apply to my case, but some things I had to change in my games and I never had problems again.
RESPONSE FROM GOOGLE ATTORNEYS:
(This text has been translated from Portuguese to English, maybe something doesn't make sense in other languages)
"Thank you for the contact.
In consideration of your notification received, we clarify that violations of the
Google AdMob policies regarding disallowed interstitial ads and
disallowed implementation of bounty ads
As for interstitial ads, it is not allowed to insert this type of ad at the
load or exit the app, as interstitials should only be placed between pages of
app content.
Ads should not be placed in apps running in second
plan on the device or outside the app environment.
It is important to note that disallowed implementations of interstitial ads include the
no ad insertion after each user action, including, without limitation, clicks, actions
to slide, etc.
Interstitial ad immediately after another
interstitial ad was displayed to the user and closed by the user.
For more information and
guidance on this topic, go to support.google.com/admob/answer/6066980 and
support.google.com/admanager/answer/6309309.
As for reward (awarded) ads, we inform you that non-rewarded ads
(interstitial ads) cannot be placed in prized inventories. no ad
interstitial must appear as a reward ad, as interstitials do not
are designed to be placed in reward inventories (during a flow
of reward).
To correct the violation, the publisher must ensure that no interstitial ads
appears right after a rewarded ad closes. More information can be
located at support.google.com/admob/answer/7372450 and
support.google.com/admob/answer/7313578.
Having made these clarifications and to assist with the solution of the reported problems,
We recommend that you access the App Policy Center and take the following steps: (i) correct the
policy violations/update your app on the Play Store or App Store and (ii) submit a
appeal through the App Policy Center.
When filing a dispute, please describe the changes made to comply with the policies of the
program or explain why you think a violation may not apply to the
concrete case.
Once the challenge is submitted, the application will be reviewed and the result of the review will be
will be notified separately.
Please note that if apps violate Google's policies
Play and infringing apps are removed from the Google Play Store, serving
ads on AdMob will be disabled.
Once the Google Play Policy Team
reinstate the apps, the AdMob policy violation flag will be removed
automatically.
Finally, we inform you that Google offers, in its Help Center, all the information and
support for the topics dealt with in this notification. In this sense, we recommend that
see support.google.com/admob/answer/6201362 and
youtube.com/watch
We remain at your service.
Sincerely,
Google Team"