Hi! I understand that your MX Player app is automatically exiting or closing on your WebKit device running Android 10. Let's get to the bottom of this together.

To start, could you let me know when the app tends to close? For example, is it right when you open it, while playing a video, changing orientation, or at some other time? Also, do you see any error messages or does it just close silently?

Meanwhile, here are some initial steps that often help fix auto-exit or crash issues:

1. Restart Your Device: Sometimes, a simple reboot clears temporary glitches.

2. Clear MX Player Cache and Data:
- Go to your Android Settings > Apps > MX Player.
- Tap on Storage.
- Clear Cache first and check if the problem persists.
- If yes, clear Data as well (note this will reset app settings).

3. Check for App Updates: Open the Google Play Store and see if there’s an update for MX Player. Updated versions often fix bugs.

4. Check Device Storage: Ensure your device has enough free storage space. Low space can cause apps to close unexpectedly.

5. Disable Hardware Acceleration: Sometimes hardware decoding causes crashes.
- Open MX Player, go to Settings > Decoder, and try switching from HW to SW decoding.

6. Avoid Changing Orientation During Playback: Some users have reported the app closes if you manually rotate the screen or use the rotation button while playing videos.

If you've already tried any of these, please let me know which ones so I can suggest more specific or advanced fixes. Also, do you experience this with all videos or just certain files?

Looking forward to your reply!