iOS Question iAdMob interstitial work and Banner no ?

        'AdMob hinzufügen(Werbung)
           AdView1.Initialize("AdView1","ca-app-pub-3476309460992388/1338460354", Page1, AdView1.SIZE_SMART_BANNER_LANDSCAPE)
        Page1.RootPanel.AddView(AdView1, 0, 100%y - GetAddViewHeight, 100%x, GetAddViewHeight)
        AdView1.LoadAd
        AdView1.Visible=True

           iad.Initialize("iad","ca-app-pub-3476309460992388/1338460354")
        iad.RequestAd

Sub GetAddViewHeight As Int
   Dim height As Int
   If GetDeviceLayoutValues.DeviceApproximateScreenSize < 6 Then
     'phones
     If GetDeviceLayoutValues.Width > GetDeviceLayoutValues.height Then
       height = 32dip
     Else
       height = 50dip
     End If
   Else
     If GetDeviceLayoutValues.Width > GetDeviceLayoutValues.height Then
       'tablets
       height = 60dip
     Else
       height = 90dip
     End If
   End If
   Return height
End Sub