Is WinUIEx compatible with Duende Identity Server? #262

I have the below code and when I run it, my identity server complains that the client_id is missing. Is there a place where I can find an example of how to connect to IDS, I have spent a few hours searching but haven't found anything.

var result2 = await WinUIEx.WebAuthenticator.AuthenticateAsync(new Uri("https://auth-dev.speakwrite.com/connect/authorize"), new Uri("mobileapp://callback"));