1- Modify the HelloWorld sample app to use my own rewarded ad mediation id. (https://github.com/googleads/googleads-mobile-unity/tree/master/samples/HelloWorld)
2- Install Google Mobile Ads Unity Plugin v3.6.3. (https://github.com/googleads/googleads-mobile-unity/releases)
3- Install Unity Ads SDK through Unity editor. From Window -> Services menu. Link to my Unity project which has the rewarded ad.
4- Install Unity Ads adapter v2.1.0.0 from (https://bintray.com/google/mobile-ads-adapters-android/com.google.ads.mediation.unity#files/com/google/ads/mediation/unity) as described here (https://groups.google.com/forum/#!topic/google-admob-ads-sdk/0klwA5IbkBA)
5- Run the app. Request for a rewarded video ad. And show it.
I can see the ad running and the OnAdLoaded and OnAdOpening events are called. When the video finishes I close the ad. But OnAdRewarded and OnAdClosed events are not fired.
I've attached the logcat.