Hello! I understand you're having trouble with Classplus videos not playing. Let’s get to the bottom of this together.

Could you please tell me:
- Are you trying to watch these videos on the Classplus web app using your WebKit browser on Windows 10?
- Is this issue happening with all videos or just specific ones?
- Do you see any error messages or does the video simply not start?
- Have you tried refreshing the page or restarting your browser?

In the meantime, here are some initial steps you can try that often resolve video playback issues on web platforms:

1. Clear your browser cache and cookies: Sometimes old cache files cause loading problems. You can do this from your browser’s settings under Privacy or History.

2. Restart the browser and try again.

3. Check your internet connection speed to ensure it’s stable and fast enough for streaming videos. You may run a quick speed test online.

4. Disable any browser extensions that might block video content (like ad blockers).

5. Make sure your browser and Windows OS are up to date, as outdated software can cause compatibility problems.

If you’ve already done these, let me know, and we’ll look into more advanced troubleshooting, such as checking network permissions, video player compatibility, or possible server issues on Classplus’s side.

Looking forward to your reply!