Lesson or video not loading
Steps to fix playback issues, blank screens, and progress that will not save.
Check your connection
Interactive lessons need a stable internet connection. Switch to a stronger network or move closer to your router, then reload the page.
Refresh and retry
- Refresh the browser tab or restart the mobile app.
- Sign out and sign back in.
- Return to the course and open the lesson again.
Clear browser issues
If you are on the web, try another supported browser such as Chrome, Safari, or Edge. Disable ad blockers temporarily — they can interfere with lesson assets.
Progress not saving
Make sure you are signed in before starting a lesson. If an activity completed but progress did not update, wait a minute and revisit the course page. If the issue continues, contact hello@bigthinkers.ai with the course name and lesson title.