A blank area, endless spinner or error usually means WebGL is unavailable.
- Update your browser and graphics drivers.
- Enable hardware acceleration in browser settings.
- Disable extensions that block scripts or canvas.
- Try another browser or device to isolate the issue.
Check support at get.webgl.org.
Many issues are covered in Common Issues — browsers, JavaScript, cookies and sign-in.
Still stuck? Open a ticket and we'll help.