I don't know some changes....

Wino.Mail/Views/WelcomePage.xaml

@@ -1,35 +0,0 @@
-<abstract:WelcomePageAbstract
-    x:Class="Wino.Views.WelcomePage"
-    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:abstract="using:Wino.Views.Abstract"
-    xmlns:controls="using:Microsoft.Toolkit.Uwp.UI.Controls"
-    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-    xmlns:local="using:Wino.Views"
-    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
-    mc:Ignorable="d">
-
-    <Border
-        Margin="0,0,7,7"
-        Background="{ThemeResource WinoContentZoneBackgroud}"
-        BorderBrush="{StaticResource CardStrokeColorDefaultBrush}"
-        BorderThickness="1"
-        CornerRadius="7">
-        <Grid Padding="24">
-            <ScrollViewer>
-                <controls:MarkdownTextBlock
-                    x:Name="MarkdownControl"
-                    Background="Transparent"
-                    CharacterSpacing="12"
-                    FontSize="16"
-                    Header1FontSize="30"
-                    Header2FontSize="22"
-                    ImageStretch="UniformToFill"
-                    LinkClicked="HyperlinkClicked"
-                    ListBulletSpacing="10"
-                    Text="{x:Bind ViewModel.CurrentVersionNotes, Mode=OneWay}" />
-            </ScrollViewer>
-        </Grid>
-    </Border>
-
-</abstract:WelcomePageAbstract>