Play Games Plugin v0.10.12 is causing trouble with admob plugin v6.0.2

I have been working on a project and want to implement admob ads in it. I followed official documentation and implement banner, interstitial and rewarded ads as well.

Everything works fine in editor as well as on real device. Then i implemented play games plugin v0.10.12 from github and configured it properly. But now when i tested this on real device, only banner and interstitial works. Rewarded ads don’t show up. When i check android logcat, this message pop up:

Load error string: { "Code": 3, "Message": "No ad config.", "Domain": "com.google.android.gms.ads", "Cause": "null", "Response Info": { "Response ID": "null", "Mediation Adapter Class Name": "", "Adapter Responses": [] } }

And “AdFailedToLoad” callback fires.

Then i created a fresh project and implemented everything i just did, same thing happens. All three types of ads shows up before play games plugin but problem with rewarded ads after the plugin.

I am really confused. Please help me.

P.S.: I am using test ad units in all cases.

shubhamjindal have you solved the problem?