Due to a Cloudflare-related outage earlier today, some users may have experienced 500 server errors when signing in or using Zircon3D.

Everything is now back online.
To fully restore functionality inside Home Assistant, please restart the Zircon3D add-on:

Home Assistant → Settings → Add-ons → Zircon3D Proxy → Restart

Thanks for your patience! If you notice anything unusual, feel free to reach out.

— Zircon3D Team