MAUI.NET – IOS – Why the Webview shows Blackscreen when ssl certificate is invalid?

I am new to Maui.net and would like to write an app for ios that shows a webview in which websites without a valid ssl certificate are displayed.

I have already managed to do it for Androit. Unfortunately i fail with IOS. Does anyone have a solution?

Thanks in advance!

I already try this:

public class AppDelegate : MauiUIApplicationDelegate
{
    protected override MauiApp CreateMauiApp() => MauiProgram.CreateMauiApp();

    public override bool FinishedLaunching(UIApplication app, NSDictionary options)
    {
        ServicePointManager.ServerCertificateValidationCallback =
            (message, certificate, chain, sslPolicyErrors) => true;

        return base.FinishedLaunching(app, options);

        // ...remaining code
    }

I have added NSAppTransportSecurity to my Info.plist:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>LSRequiresIPhoneOS</key>
    <true/>
    <key>UIDeviceFamily</key>
    <array>
        <integer>1</integer>
        <integer>2</integer>
    </array>
    <key>UIRequiredDeviceCapabilities</key>
    <array>
        <string>arm64</string>
    </array>
    <key>UISupportedInterfaceOrientations</key>
    <array>
        <string>UIInterfaceOrientationPortrait</string>
        <string>UIInterfaceOrientationLandscapeLeft</string>
        <string>UIInterfaceOrientationLandscapeRight</string>
    </array>
    <key>UISupportedInterfaceOrientations~ipad</key>
    <array>
        <string>UIInterfaceOrientationPortrait</string>
        <string>UIInterfaceOrientationPortraitUpsideDown</string>
        <string>UIInterfaceOrientationLandscapeLeft</string>
        <string>UIInterfaceOrientationLandscapeRight</string>
    </array>
    <key>XSAppIconAssets</key>
    <string>Assets.xcassets/appicon.appiconset</string>
    <key>CFBundleURLTypes</key>
    <array>
        <dict>
            <key>CFBundleURLName</key>
            <string>URL-Typ 1</string>
            <key>CFBundleTypeRole</key>
            <string>Editor</string>
        </dict>
    </array>
    <key>NSAppTransportSecurity</key>
    <dict>
            <key>NSAllowsArbitraryLoads</key>
            <true/>
    </dict>
</dict>

</plist>