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Troubleshooting

Browser compatibility

What we test on

  • Chrome, Firefox, Edge, and Safari — current and previous major versions.
  • Desktop and laptop — any OS.
  • Mobile

    The site renders on mobile but the simulated terminal really wants a real keyboard. iOS Safari and Android Chrome work for browsing content; for active practice, use a laptop.

    Things that break in older browsers

  • IndexedDB transactions in very old Safari (pre-15).
  • WASM features used in some validators (Safari 14 and earlier).
  • Troubleshooting steps

  • Hard reload (Ctrl+Shift+R).
  • Check the browser console (F12) for errors.
  • Try a private/incognito window.
  • Email support@certforged.com with the browser version and a description of what broke.
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