Hi! I understand you're experiencing an issue where the MyHeritage app’s screen goes dim after a few seconds of connectivity on your Windows device using WebKit. Let's get this sorted out together.

To start, could you clarify for me:
- Are you using the MyHeritage app as a standalone Windows application, or are you accessing MyHeritage via a web browser on your device?
- Does the dimming happen only within the MyHeritage app or also affect your whole screen or other apps during the same time?
- Have you noticed if this dimming corresponds with any kind of timeout, like inactivity or a power-saving setting kicking in?

Meanwhile, here’s a step-by-step guide to troubleshoot this issue, tailored to your environment:

1. Check Display Power Settings on Windows:
- Go to Settings > System > Power & sleep.
- Make sure the screen timeout is set long enough so it doesn’t dim or turn off quickly.
- Also check Advanced power settings to ensure no adaptive brightness or screensaver is configured to trigger quickly.

2. Clear Browser Cache and Cookies (if using Web Access):
If you access MyHeritage through a browser (WebKit engine-based like Edge or Safari), cached data may cause display glitches.
- Clear your browser cache and cookies.
- Restart the browser and try accessing MyHeritage again.

3. Update the App or Browser:
- Check if your MyHeritage app or browser is up to date.
- Outdated software can sometimes cause connectivity and display issues.

4. Verify Internet Connection Stability:
- Since connectivity interruptions can cause display or app behavior issues, confirm that your internet connection is working reliably.
- Try switching to a different Wi-Fi network or a mobile hotspot as a test.

5. Disable Any Third-Party Screen-Dimming or Display Enhancement Software:
- Sometimes third-party apps designed to adjust screen brightness can cause dimming issues.

6. Sign Out and Sign Back In:
- If using the app, try signing out and then signing back in to refresh your session.

If after these steps the screen still dims only while using MyHeritage, we can dive into more advanced troubleshooting or check for any known issues affecting the app.

Could you let me know which steps you’ve tried or any other specific details about when the dimming happens? That way, I can tailor the next steps precisely.

Are you satisfied with the initial suggestions so far?