Hello,
I am using admob mediation in my unity 3D project.
I using ad networks :
Admob Network,
UnityAds,
Applovin,
Facebook Audience Network.
Interstitial ad works in all of them.
Rewarded video ad works in Admob, Unityads and Applovin. There is no problem.
Rewarded video ad works on Facebook Audience Network but HandleRewardBasedVideoRewarded event not called.
Unity 3D Version : Unity 2018.3.5f1
Google Mobile Ads Unity Plugin Version : v3.15.1
Google Mobile Ads Facebook Mediation Adapter Version : 2.1.1
Note : I checked Apply to all networks in mediation groups box in Admob Rewarded Settings Panel.