After a few hours everything works again. And in both apps.
And I did nothing.
I have implemented rewarded video ads yesterday in two of my apps that already had interstitial and banner ads working fron long time.
I used the test code:
Hello, I want a way to mute Admob ads, ((Video reward ads, and Interstitial ads...etc)) on my app.
I read this topic from Google: https://developers.google.com/admob/android/global-settings , but I don't know how to integrate this code into my own application using Android Studio.