Hi onychomys, thanks for sharing that! I'm not seeing that issue on LibreWolf, Firefox, Safari, nor Chrome (Linux and macOS). Is there anything in particular about your setup that could help me understand what's happening? It looks like you might not have JS enabled, and it'll be required here, at least for now.
That being said, I could definitely make it fail more gracefully.
UPDATE: Just made it more obvious the app needs JS enabled.