No. Did not show any interstitial. In fact, I did not even initialise the plugin and show FAN ads, though I included it in the app. There was also another error shown but I do not have the test case as it submitted as a crash report by my user. This is for another of my apps which has FAN ads in it.
java.lang.ClassCastException: com.facebook.ads.InterstitialAd cannot be cast to plugin.fbAudienceNetwork.LuaLoader$BannerAdView at plugin.fbAudienceNetwork.LuaLoader$BannerAdView.onSizeChanged(LuaLoader.java:342) at android.view.View.sizeChange(View.java:15717) at android.view.View.setFrame(View.java:15690) at android.view.View.layout(View.java:15606) at android.view.ViewGroup.layout(ViewGroup.java:4967) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573) at android.widget.FrameLayout.onLayout(FrameLayout.java:508) at android.view.View.layout(View.java:15610) at android.view.ViewGroup.layout(ViewGroup.java:4967) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573) at android.widget.FrameLayout.onLayout(FrameLayout.java:508) at android.view.View.layout(View.java:15610) at android.view.ViewGroup.layout(ViewGroup.java:4967) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573) at android.widget.FrameLayout.onLayout(FrameLayout.java:508) at android.view.View.layout(View.java:15610) at android.view.ViewGroup.layout(ViewGroup.java:4967) at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1703) at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1557) at android.widget.LinearLayout.onLayout(LinearLayout.java:1466) at android.view.View.layout(View.java:15610) at android.view.ViewGroup.layout(ViewGroup.java:4967) at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573) at android.widget.FrameLayout.onLayout(FrameLayout.java:508) at android.view.View.layout(View.java:15610) at android.view.ViewGroup.layout(ViewGroup.java:4967) at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2099) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1856) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1081) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5818) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:769) at android.view.Choreographer.doCallbacks(Choreographer.java:582) at android.view.Choreographer.doFrame(Choreographer.java:552) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:755) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5234) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:909) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:704)