I have an application with ads, in debug mode, everything works as it should with test ads, in release mode in an application downloaded from the store, ads do not work at all. I read it, changed minifyEnabled and shrinkResources to false and uploaded it to InternalSharing (set it as a test one), advertising works. But in the console, when filling, it writes a warning about the absence of obfuscation, from which I understand that it is necessary to return minifyEnabled and shrinkResources to true, and add something to ProGuard, the question is what to add? Or could there be some other reason? I ask first of all because just a week ago, in another application, advertising worked as it should, with the same settings.
Library Version: com.google.android.gms:play-services-ads:20.6.0