Microsoft Advertising not shown
I started to use advertising control, but I'm going crazy trying to let it work.  
Then I copied PivotPage.xaml taken from [Microsoft Ad Control Sample](http://msdn.microsoft.com/en-us/library/ff431744(v=vs.92).aspx) and made it my starting page in my app, but ad control is not shown (I'm not able to see banner); if I try to run Microsoft app, banner is shown.  

So I registered my app on pubCenter and I got an appId and a unitId and tried to use them in my app, but the result is the same: no banner!!
If I try to use my ids in Microsoft app, test banner is shown.

Why using Microsoft example I'm able to see banner and using same page in my app I can't?  
Why using my ids, Microsoft app does not show correct banner?

Here is XAML
    <Grid x:Name="LayoutRoot" Background="Transparent">
        <Grid.RowDefinitions>
            <RowDefinition Height="*"/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>

        <!--Pivot Control-->
        <controls:Pivot Grid.Row="0" Title="Ad Control Sample">

            <!--Pivot item one-->
            <controls:PivotItem Header="piv 1">
            </controls:PivotItem>

            <!--Pivot item two-->
            <controls:PivotItem Header="piv 2">
            </controls:PivotItem>

            <!--Pivot item three-->
            <controls:PivotItem Header="piv 3">
            </controls:PivotItem>

        </controls:Pivot>

        <StackPanel Grid.Row="1" VerticalAlignment="Bottom" >
            <TextBlock Text="This is the same ad." 
                       TextWrapping="Wrap" 
                       HorizontalAlignment="Stretch" 
                       TextAlignment="Center" />
            <my:AdControl Name="adControl1" 
                          ApplicationId="test_client" 
                          AdUnitId="Image480_80" 
                          HorizontalAlignment="Center" 
                          Width="480" Height="80" />
        </StackPanel>



Microsoft Advertising not shown
===

I started to use advertising control, but I'm going crazy trying to let it work.  
Then I copied PivotPage.xaml taken from [Microsoft Ad Control Sample](http://msdn.microsoft.com/en-us/library/ff431744(v=vs.92).aspx) and made it my starting page in my app, but ad control is not shown (I'm not able to see banner); if I try to run Microsoft app, banner is shown.  

So I registered my app on pubCenter and I got an appId and a unitId and tried to use them in my app, but the result is the same: no banner!!
If I try to use my ids in Microsoft app, test banner is shown.

Why using Microsoft example I'm able to see banner and using same page in my app I can't?  
Why using my ids, Microsoft app does not show correct banner?

Here is XAML
    <Grid x:Name="LayoutRoot" Background="Transparent">
        <Grid.RowDefinitions>
            <RowDefinition Height="*"/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>

        <!--Pivot Control-->
        <controls:Pivot Grid.Row="0" Title="Ad Control Sample">

            <!--Pivot item one-->
            <controls:PivotItem Header="piv 1">
            </controls:PivotItem>

            <!--Pivot item two-->
            <controls:PivotItem Header="piv 2">
            </controls:PivotItem>

            <!--Pivot item three-->
            <controls:PivotItem Header="piv 3">
            </controls:PivotItem>

        </controls:Pivot>

        <StackPanel Grid.Row="1" VerticalAlignment="Bottom" >
            <TextBlock Text="This is the same ad." 
                       TextWrapping="Wrap" 
                       HorizontalAlignment="Stretch" 
                       TextAlignment="Center" />
            <my:AdControl Name="adControl1" 
                          ApplicationId="test_client" 
                          AdUnitId="Image480_80" 
                          HorizontalAlignment="Center" 
                          Width="480" Height="80" />
        </StackPanel>


