Hi! I see that when you open the MantisX app on your Windows 10 device, it just shows a white window and doesn't allow you to connect. Let's get this sorted out together.

First, can you tell me if the app was working fine before or if this is the first time you're opening it? Also, have you tried any steps so far, like restarting the app or your computer?

Meanwhile, here's a straightforward approach we can try:

1. Check internet connection: Make sure your Windows PC is connected to a stable internet connection, as the app may need internet to load properly.

2. Restart the app: Close the MantisX app completely. To do this, open Task Manager (Ctrl + Shift + Esc), find MantisX process, and end it. Then reopen the app.

3. Run as Administrator: Right-click the MantisX app icon and select "Run as administrator." This can resolve some permission-related display issues.

4. Update app and Windows: Verify that your MantisX app is the latest version. Also, ensure your Windows 10 system is updated.

5. Check Bluetooth: Since the connection depends on Bluetooth, ensure your PC’s Bluetooth is enabled and working. You can toggle Bluetooth off and on again to refresh it.

6. Clear app cache/data (if possible): Sometimes, cached data can cause white screen issues. If MantisX has a setting or folder for cache on Windows, try clearing it. Alternatively, uninstall and reinstall the app to reset data.

7. Disable Antivirus/Firewall temporarily: Some security software can block app functions. Try temporarily disabling antivirus or firewall and test the app again.

If none of these help, let me know, and we can dive deeper into logs, compatibility modes, or check for specific Bluetooth driver issues.

Are you okay to try these and let me know what happens?