Hi! I see you're encountering "Error 16" with the MD Lottery app on your Android device. I'd like to help you fix that. Could you tell me a bit more about when exactly you see this error? For example, does it happen when you try to scan a ticket, log in, check numbers, or some other action?

While I wait for those details, here are some general steps you can try to resolve app errors like this on Android 10 with WebKit browser:

1. Restart the App: Completely close the MD Lottery app from your recent apps and open it again.

2. Clear Cache and Data:
- Go to your device's Settings > Apps > MD Lottery app.
- Tap on Storage.
- Select "Clear Cache" and then "Clear Data". (Clearing data may require you to log in again.)

3. Check for Updates: Ensure the app is the latest version by visiting the Google Play Store and updating if available.

4. Reinstall the App: Uninstall the app fully, then reinstall it fresh from the Play Store.

5. Check Network Connection: Confirm you have a stable internet connection, preferably Wi-Fi.

6. Check Date and Time Settings: Incorrect device date/time can cause errors. Set your date/time to automatic.

If you've already tried some or all of these, please let me know so I can suggest more specific fixes tailored to your issue.

Are you able to share the exact wording or details of the error message beyond just "Error 16"? That could help narrow things down further.