Hi there! I understand you're trying to open the Next Toppers app, but it’s not opening properly and shows a message about "root doesn’t support." To help you better, can I confirm this issue is happening on your Windows 10 device using WebKit in the browser?

Also, could you tell me if you've tried installing the app on a rooted device or if there's any special setup you used? The error seems related to rooting restrictions, which usually appear on mobile devices but it’s unusual on Windows 10.

In the meantime, here are a few steps that might help:

1. If you’re using any emulator or special software to run the Next Toppers app on your Windows device, check if the emulator or environment is rooted or modified in any way. The app might be blocking operation if it detects root access for security reasons.

2. Try clearing the cache and data of the app or the browser if you’re accessing Next Toppers via a web platform. Sometimes cached data can cause loading issues.

3. Ensure that you have the latest version of the app or browser. An outdated version might cause such errors.

4. If you're on a mobile device or using an emulator mimicking a mobile device and the device is indeed rooted, the app might be incompatible. Unrooting or using a non-rooted device could help.

If you could provide more details about your setup and where exactly you see this message (app window, error popup, browser message), I can guide you further with tailored steps.

Are you accessing the app directly via Windows, through a browser, or using some mobile emulator? Let me know!