Hi! I understand that every time you try to log in to the Ambetter Health app on your Android device (WebKit browser, Android 10), your screen turns black. Let’s see if I can help you get this fixed.

First, just to clarify:
- Are you using the Ambetter mobile app downloaded from Google Play, or are you trying to log in through the browser (like Chrome or another WebKit-based browser)?
- Has this just started happening recently, or has it been ongoing for a while?
- Have you noticed if this happens only with Ambetter or with other apps/sites as well?

Meanwhile, here are some troubleshooting steps you can try:

1. Close and Reopen the App or Browser:
If you’re using the app, close it completely (remove from recent apps), then reopen it. If it’s a browser issue, close the browser tab.

2. Clear App Cache and Data (For the Ambetter App):
- Go to Settings > Apps > Ambetter
- Tap on Storage
- Tap Clear Cache, then Clear Data
- Try logging in again afterward.

3. Update the Ambetter App:
Make sure your app is updated to the latest version from the Google Play Store. Sometimes an outdated version can cause issues.

4. Check for Scheduled Maintenance or Known Issues:
Ambetter sometimes performs maintenance or experiences server issues that can affect login. You can check their maintenance page here: Maintenance - Ambetter Health.

5. Try Logging in from Another Browser or Device:
This will help determine if the black screen issue is specific to your current device or app.

6. Reinstall the Ambetter App:
If you’re using the app and clearing cache/data did not help, uninstall and then reinstall it.

If these steps don’t resolve the black screen issue, there might be a deeper app compatibility or server-side problem. In that case, reaching out directly to Ambetter’s support could be best. You can contact them for personalized help at the Ambetter Contact page: Ambetter Contact Us.

Could you let me know which steps you've tried so far? That way, I can suggest the next best action.