<VerticalStackLayout>
        <Label 
            Text="Welcome to .NET MAUI!"
            VerticalOptions="Center" 
            HorizontalOptions="Center" />
        <Label Text="Status:" />
        <telerik:RadComboBox/>

    </VerticalStackLayout>

This works for Android. IOS gives error "Cannot resolve type "http://schemas.telerik.com/2022/xaml/maui:telerik:RadComboBox" 

But  telerik:RadCheckBox does not have the same problem.

   <VerticalStackLayout>
        <Label 
            Text="Welcome to .NET MAUI!"
            VerticalOptions="Center" 
            HorizontalOptions="Center" />
        <Label Text="Status:" />
        <telerik:RadCheckBox IsChecked="True"/>

    </VerticalStackLayout>     

Will work for IOS and Android.

How do I fix this?

I am using VS Community 2022 Preview 

Version 17.3.0 Preview 6.0

and Telerik.UI.for.Maui.Trial 2.2.0