Hi! I understand that the AirDroid screen monitor (screen mirroring) feature is not working for you on your Android 10 device using WebKit. Let's try to get this sorted out.

To start, could you please tell me:
- Are you getting any error messages when you try to use screen monitoring?
- Have you already tried clicking the "Start Now" button in AirDroid to begin screen sharing, and did it respond?
- Is your AirDroid app updated to the latest version from the Play Store?
- Are both your phone and the device you are mirroring to connected to the same Wi-Fi network?

Meanwhile, here are some basic steps to troubleshoot the screen mirroring issue:

1. Check network connection: Make sure both devices (your Android 10 phone and the computer or device you want to mirror to) are on the same stable Wi-Fi network. Screen mirroring often requires both devices on the same LAN.

2. Grant permissions: Open AirDroid on your phone, and ensure all permissions (especially screen recording and overlay permissions) are granted. Sometimes the mirroring won't start without these.

3. Use the "Start Now" button properly: When you initiate the screen monitor, AirDroid usually asks to start capturing your screen — click "Start Now" to grant permission.

4. Restart AirDroid and the device(s): Close AirDroid on both devices and restart them. Then try again.

5. Disable battery optimization: On Android 10, battery optimization can restrict apps running in the background. Go to Settings > Apps > AirDroid > Battery > Disable battery optimization for AirDroid.

If you have already tried these, please let me know which steps, so I can guide you with more advanced fixes like checking device settings or network configurations.

Also, for detailed solutions and visual guidance, there is helpful content available such as videos explaining "AirDroid Start Now problem" and screen sharing fixes on YouTube1 2.

Let me know how it goes or if you want me to walk you through any step!