AdMob policy violation: Disabled app(s) or account
The AdMob Policy team is dedicated to ensuring that your app(s) comply with our policies. Additionally, all AdMob publishers must also comply with AdSense policies in order to use AdMob. The AdMob Policy team reserves the right to disable ad serving to your app(s) and/or disable your AdMob account at any time. If your account is disabled, you will not be eligible for further participation in the AdSense and/or AdMob program(s).
For details on the violation(s), please review the email that the AdMob Policy team sent you. If you missed this email, try searching the inbox of the email address associated with your AdMob account for emails from email@example.com. Check your email account's spam filter to make sure the email wasn't mistakenly flagged as spam.
Review the notification email (which should include an issue ID) carefully for a description of the violation and what steps, if any, you can take to fix the issue. Once you've made the appropriate changes to your app, you can request a review of your app by submitting an AdMob policy appeal.
Watch this video to understand the difference between a warning email and an ad serving disabled email and how to fill out the appeal form correctly.