Admob Mediation Unity3dAds IOS No ad returned from any ad server

When I use cocos2dx to make Admob Meditate Unity3d Ads in IOS, It can send request to the server and get response,but at last load rewardBasedVideoad failed.
Does anyone encounter the same problem？


2016-12-29 11:42:22.526951 admob-mobile[843:195694] I/UnityAds: +[UnityAds initialize:delegate:testMode:] (line:63) :: Initializing Unity Ads 2.0.4 (2004) with game id 1218345 in production mode
2016-12-29 11:42:22.533636 admob-mobile[843:195842] I/UnityAds: -[UADSInitializeStateConfig execute] (line:136) :: Unity Ads init: load configuration from https://cdn.unityads.unity3d.com/webview/2.0.4/release/config.json
2016-12-29 11:42:23.248822 admob-mobile[843:195842] I/UnityAds: -[UADSInitializeStateLoadCache execute] (line:174) :: Unity Ads init: webapp loaded from local cache
2016-12-29 11:42:24.824099 admob-mobile[843:195927] I/UnityAds: +[UADSApiSdk WebViewExposed_logInfo:callback:] (line:57) :: Requesting configuration from https://adserver.unityads.unity3d.c...com.gravity.admob&encrypted=true&rooted=false
2016-12-29 11:42:26.948343 admob-mobile[843:195927] I/UnityAds: +[UADSApiSdk WebViewExposed_logInfo:callback:] (line:57) :: Received configuration with 2 placements
2016-12-29 11:42:27.428958 admob-mobile[843:195927] I/UnityAds: +[UADSApiSdk WebViewExposed_logInfo:callback:] (line:57) :: Requesting ad plan from https://adserver.unityads.unity3d.c...etworkType=0&gamerId=5863809d45efee6a0d0c447e
2016-12-29 11:42:28.159933 admob-mobile[843:195927] I/UnityAds: +[UADSApiSdk WebViewExposed_logInfo:callback:] (line:57) :: Unity Ads server returned game advertisement for AB Group 14
2016-12-29 11:42:32.897223 admob-mobile[843:195694] Reward based video ad failed to load No ad returned from any ad server. {
NSLocalizedDescription = "No ad returned from any ad server.";
NSLocalizedFailureReason = "No ad returned from any ad server.";
} 9.

 

ok i solved this question
the Name in Admob must be same as unity3d Plancedment's name

 

I am trying to Admob Meditate Unity3d Ads as well with no luck, any way you can post some more info on how you did it?