Xamarin.Forms.Map is not working for UWP platform. How to make it work?

Question

I'm trying to load street map using Xamarin.Forms.Map plugin in my project for UWP app. For that I have also get the token from MSDN. Here is what I have done:

MapePage.xaml

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" 
             xmlns:vm="clr-namespace:Map_POC.ViewModels" 
             xmlns:maps="clr-namespace:Xamarin.Forms.Maps;assembly=Xamarin.Forms.Maps" 
             xmlns:local="clr-namespace:Map_POC.CustomControls"
             x:Class="Map_POC.Views.MapePage">
    <ContentPage.BindingContext>
        <vm:MapePageViewModel />
    </ContentPage.BindingContext>
    <ContentPage.Content>
        <StackLayout HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand">
            <maps:Map
                x:Name="MyMap"
                HorizontalOptions="FillAndExpand" 
                VerticalOptions="FillAndExpand"     
                MapType="Street" />
        </StackLayout>
    </ContentPage.Content>
</ContentPage>

---

MapePage.xaml.cs

public MapePage()
{
    InitializeComponent();
    
    Position position = new Position(-37.8141, 144.9633);

    var pin = new Pin
    {
        Type = PinType.Place,
        Position = position,
        Label = "I'm a Pin",
    };

    MyMap.Pins.Add(pin);

    MyMap.MoveToRegion(
        MapSpan.FromCenterAndRadius(
            position, Distance.FromMiles(1)));
}

---

MainPage.xaml.cs (In UWP Solution)

public sealed partial class MainPage
{
    public MainPage()
    {
        this.InitializeComponent();
        Xamarin.FormsMaps.Init(Keys.UWPMapToken);
        Windows.Services.Maps.MapService.ServiceToken = Keys.UWPMapToken;
        LoadApplication(new Map_POC.App());
    }
}

---

Output: With hybrid map it shows map but not showing pin and locations properly.

---

1. Other thing apart from this it not works in offline mode, can we cache map for offline mode?
2. Can we draw a polygon and coordinates covered inside the polygon can be clicked individually or not?

Any help on this will be highly appreciated.