Google has released an updated version of the Google Play policy. The most impactful change is that incentivized installs are now forbidden:

Source: https://play.google.com/about/storelisting-promotional/ratings-reviews-installs/, emphasis ours



If you’re still promoting your app with incentivized installs, now is the time to stop and look at non-incentivized installs. AppBrain Promote is one of the many platforms that you can use.



This change, and others, don’t impact the AppBrain SDK. The AppBrain monetize service is still 100% Google Play compliant.