Chris wrote:
Good news — that message isn't your password being rejected. "Failed to fetch" is the browser telling you it lost contact with the box for a second, so it never got an answer back. Nothing's broken, and you're not locked out. Try this first: reload the page. If it now just asks you to enter a password (instead of showing the first-time setup screen), then your password did save — log in with the one you typed. If it still shows the setup screen, run this on the box and paste back what it says: sudo sparkbox doctor That tells us whether the dashboard is actually running, and we'll go from there.