I got this info on mail. All 8 apps got same issue.
@appyet please help us.
Issue: Violation of the Personal and Sensitive Information and Usage of Android Advertising ID Policies
We have determined that your app uses a permanent device identifier and does not prominently disclose this practice. If your app collects and transmits personal or sensitive user data unrelated to functionality described prominently in the app’s listing on Google Play or in the app interface, then prior to the collection and transmission, it must prominently highlight how the user data will be used and have the user provide affirmative consent for such use.
Any advertising identifier must not be connected to personally-identifiable information or associated with any persistent device identifier (for example: SSAID, MAC address, IMEI, etc.) without explicit consent of the user.
more info here:
https://forum.appyet.com/index.php?threads/my-apps-are-taken-down-from-play-store.2034/