https://wccftech.com/google-ban-apps-play-store-lockscreen-ads/

Google is finally banning apps from its official Play Store that include lockscreen ads. While advertising has become an unavoidable part of our online existence, some forms of ads are borderline annoying and malicious. Google is the primary source of monetization for many, but it is now taking a harder stance on how these advertisements are served on the lockscreen.

“Google Play supports a variety of monetization strategies to benefit developers and users, including paid distribution, in-app products, subscriptions, and ad-based models,” the company said. However, it doesn’t “allow apps that contain deceptive or disruptive ads.”