This copy isn't connected to a Firebase project yet. Open the file, find firebaseConfig near the top of the script, and paste in your project's config values. Reopen the file once that's saved.
Sign in to keep your interview schedule synced across every device.
Enter your password to unlock on this device. Your data is stored encrypted, so this step happens once per device/session.
Your password changed since this device last unlocked your data. Answer the questions you set up to get back in — this also fixes things so your password works normally again from now on.