Admob violation message

Hi

I get message from admob.
Sometimes ads show on app like this then it correct itseft.
What can be wrong on my code how can I correct it?

<RelativeLayout xmlns:android=""
    			xmlns:tools=""
    xmlns:ads=""
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Main" >
    <com.google.android.gms.ads.AdView
        android:id="@+id/adView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        ads:adSize="SMART_BANNER"
        ads:adUnitId="@string/banner_ad_unit_id">
    </com.google.android.gms.ads.AdView> 
    
    <org.anddev.andengine.opengl.view.RenderSurfaceView
        android:id="@+id/xmllayoutexample_rendersurfaceview"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" 
        android:layout_centerInParent="true"
        android:gravity="center" />
  </RelativeLayout>

I received this message, but I don’t understand what s wrong on my app,
can you help please?

As a courtesy, we are alerting you that your app is currently in violation of the AdMob program policies. Importantly, this will require action on your part to ensure no disruption in ad serving. Please read below for more information on the actions you need to take:

Publisher Id:

App Id:

Current ad serving status: Active

Violation explanation

Publishers are not permitted to alter the behavior of AdMob ads in any way. This includes resizing ad frames to cut off parts of ads or hiding the Ads by AdMob moniker.

Action required: Please make changes immediately to your app to comply with AdMob program policies.

Current account status: Active

Whats your APP URL ? I too had this issue