I can't use BluetoothLEAdvertisementPublisher.UseExtendedAdvertisement in my c# program

I try to create a BLE server that emit an advertisement with a custom company id and manufacturer data. The company id work fine and I can send a text buffer in my manufacturer data.
but when I try to enable the UseExtendedAdvertisement, my server won't publish anymore.

As you can see my computer can handle BLE 5.0 so I don't understand why can't I use the extended Advertisement feature

 publisher = new BluetoothLEAdvertisementPublisher();


            //publisher.Advertisement.ManufacturerData.Add()
            // We need to add some payload to the advertisement. A publisher without any payload
            // or with invalid ones cannot be started. We only need to configure the payload once
            // for any publisher.

            // Add a manufacturer-specific section:
            // First, let create a manufacturer data section
            var manufacturerData = new BluetoothLEManufacturerData();

            // Then, set the company ID for the manufacturer data. Here we picked an unused value: 0xFFFE
            manufacturerData.CompanyId = 0xCA21;

            // Finally set the data payload within the manufacturer-specific section
            // Here, use a 16-bit UUID: 0x1234 -> {0x34, 0x12} (little-endian)
            var writer = new DataWriter();
            string author = "abcefghij";
            // Convert a C# string to a byte array  
            byte[] test = Encoding.ASCII.GetBytes(author);
            writer.WriteBytes(test);

            // Make sure that the buffer length can fit within an advertisement payload. Otherwise you will get an exception.
            manufacturerData.Data = writer.DetachBuffer();

            // Add the manufacturer data to the advertisement publisher:
            //publisher.UseExtendedAdvertisement = true;
            publisher.Advertisement.ManufacturerData.Add(manufacturerData);

Here the code I have to create my BLE server

Even if the hardware is Bluetooth LE 5.0 hardware, this does not mean that all new Bluetooth LE 5.0 functions are supported. Your application should check this via BluetoothAdapter.IsExtendedAdvertising before it starts using such interfaces.

And as a result of the discussion:
It should also be ensured that the test environment with which one tests one's own software has the necessary functions/features