Hi there! I see you're encountering a playback error 402 while trying to access Math 6 lesson 42 in the Homeschool app. Let's work together to get this sorted out.

To start, could you tell me if this issue happens only with lesson 42 or with other lessons too? Also, are you connected to Wi-Fi or mobile data when this happens?

Meanwhile, here are some steps you can try to fix error 402, which often relates to payment or access authorization but can sometimes be a temporary glitch:

1. Restart the App: Close the Homeschool app completely and reopen it to see if the video plays without error.

2. Check Internet Connection: Ensure you have a stable internet connection. Try switching between Wi-Fi and mobile data.

3. Clear App Cache: On your Android device, go to Settings > Apps > Homeschool app > Storage > Clear Cache. This refreshes stored temporary files that might cause playback issues.

4. Update the App: Make sure your app is updated to the latest version via the Google Play Store.

5. Offline Lesson Limits: The app supports offline use for up to 6 lessons at a time. If you have reached that limit, try clearing some downloaded lessons.

6. Log Out and Back In: Sometimes, signing out of your account and signing back in can refresh your access permissions.

If none of these fix your issue, it might be a problem on the server side or an account access issue related to your subscription or permissions for lesson 42.

Would you like me to help you check your account status? Or guide you through any of the steps above? Also, if you could share any specific messages or when exactly the error appears, that would be great!

Are you satisfied with this guidance so far?