you should use HeaderTile in a MainLandingPage

We moved all namespaces into a single namespace. No matter which (WinUICommunity) library you use, the namespace is always as follows
For use in the Xaml:
xmlns:wuc="using:WinUICommunity"
For use in the Csharp:
using WinUICommunity;

Available Properties

Name
Title
Description
Source
Link

Simple Use

<wuc:HeaderTile
        Title="Documentation Center"
        Description="Learn how to work with controls and styles."
        Link="https://ghost1372.github.io/WinUICommunity/">
    <wuc:HeaderTile.Source>
        <Image Source="/Assets/HomeHeaderTiles/Header-WinUIGallery.png" />
    </wuc:HeaderTile.Source>
</wuc:HeaderTile>