I'm not getting create a rounded rect. The badge is square

This is my badge
Badge class

<Grid      
    xmlns="http://xamarin.com/schemas/2014/forms"      
    xmlns:local="clr-namespace:Operacional"     
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"   
    x:Class="Operacional.BadgeView" 
        Padding="5"
        Margin="1"
        HeightRequest="16"     
        WidthRequest="32">

    <local:CircleView x:Name="BadgeCircle" 
                      HeightRequest="16" 
                      WidthRequest="32" 
                      CornerRadius="16" 
                      VerticalOptions="Start" 
                      HorizontalOptions="Start" />

    <Label x:Name="BadgeLabel" 
           TextColor="White" 
           VerticalOptions="Start" 
           HorizontalOptions="Start" 
           VerticalTextAlignment="Center" 
           HorizontalTextAlignment="Center" 
           FontSize="10"/>
</Grid>

this is code behind

[XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class BadgeView : Grid
    {
        public static BindableProperty TextProperty = BindableProperty.Create("Text", typeof(string), typeof(BadgeView), "0", propertyChanged: (bindable, oldVal, newVal) =>
        {
            var view = (BadgeView)bindable;
            view.BadgeLabel.Text = (string)newVal;
        });

        public static BindableProperty BadgeColorProperty = BindableProperty.Create("BadgeColor", typeof(Color), typeof(BadgeView), Color.Blue, propertyChanged: (bindable, oldVal, newVal) =>
        {
            var view = (BadgeView)bindable;
            view.BadgeCircle.BackgroundColor = (Color)newVal;
        });

        public string Text
        {
            get
            {
                return (string)GetValue(TextProperty);
            }
            set
            {
                SetValue(TextProperty, value);
            }
        }
        public Color BadgeColor
        {
            get
            {
                return (Color)GetValue(BadgeColorProperty);
            }
            set
            {
                SetValue(BadgeColorProperty, value);
            }
        }
        public BadgeView()
        {
            InitializeComponent();
            BadgeLabel.Text = Text;
            BadgeCircle.BackgroundColor = BadgeColor;
        }
    }

and this is the calling

<StackLayout Padding="0" Spacing="0" Margin="0">
            <Grid x:Name="grd" RowSpacing="1" ColumnSpacing="1" Padding="0" Margin="0" >
            <Grid.RowDefinitions>
                <RowDefinition Height="1" />
                <RowDefinition Height="*" />
                <RowDefinition Height="*" />
                <RowDefinition Height="*" />
                <RowDefinition Height="*" />
                </Grid.RowDefinitions>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*" />
                <ColumnDefinition Width="*" />
            </Grid.ColumnDefinitions>

                <Image x:Name="imgDesvioFat" Grid.Row="1" Grid.Column="0" Source="{local:ImageResource Operacional.Images.faturamento caixa-28.png}" Aspect="AspectFill">
                        <Image.GestureRecognizers>
                            <TapGestureRecognizer Tapped="OnDesvioFaturamentoTapReconizerTapped" NumberOfTapsRequired="1"></TapGestureRecognizer>
                        </Image.GestureRecognizers>
                    </Image>
                <badge:BadgeView x:Name="bdgDesvioFat" 
                                 Grid.Row="1" 
                                 Grid.Column="0" 
                                 BadgeColor="Blue"/>

                <Image x:Name="imgTckCancelados" Grid.Row="1" Grid.Column="1" Source="{local:ImageResource Operacinal.Images.tickets cancelados-05.png}" Aspect="AspectFill">
                    <Image.GestureRecognizers>
                        <TapGestureRecognizer Tapped="OnTckCanceladosTapGestureReconizerTapped" NumberOfTapsRequired="1"></TapGestureRecognizer>
                    </Image.GestureRecognizers>
                </Image>
                <badge:BadgeView x:Name="bdgTckCancelados" 
                                 Grid.Row="1" 
                                 Grid.Column="1" 
                                 BadgeColor="Blue"/>
......................

see below screenshot