Hi there! Sorry to hear that the ADDA app isn’t opening and you’re seeing some error. To get this sorted out for you, could you please share a bit more detail? For example:
- What exactly does the error message say (if any)?
- When did the problem start?
- Have you made any recent changes to your device or app?
- What device and OS version are you using? (I see it's Windows 10 with WebKit browser, but just confirming if the app is Windows-based or maybe a web app?)

Meanwhile, here are some common steps to try that often help with app-opening issues:

1. Restart the Device: Sometimes a simple reboot clears temporary glitches.
2. Clear App Cache & Data: If it’s a Windows app, look for options to clear cache via Settings > Apps. If it’s a browser-based access through WebKit, clear the browser cache and cookies.
3. Update the App: Check if there’s an update available for the app and install it. An outdated version may cause crash/errors.
4. Check Network Connection: A poor or unstable internet can cause loading issues. Try switching Wi-Fi or use a wired connection.
5. Reinstall the App: Uninstall and then reinstall the app to eliminate corrupted files.

Once I know more about the error or how you access ADDA, I can guide you through precise solutions or advanced troubleshooting if needed.

Would you be able to provide that info?