Refresh the page. The app updates itself on release; an old tab can hold stale code.
Log out and back in from the account menu at the bottom of the sidebar. If you've been away a while, the app may already have signed you out ("You've been signed out"). Sign in again; nothing is lost.
Try another browser or a private window. Extensions that block scripts (ad blockers, privacy tools) can stop parts of the app loading. Allow
app.justonce.ai,api.justonce.aiand*.auth0.com.Check the clock. A device clock more than a minute off breaks sign-in tokens.
Company networks sometimes block WebSockets or third-party domains; support chat needs
*.intercom.ioand*.intercomcdn.com.
If it's still broken, write in with the page you were on, the time (and your timezone), your browser, and a screenshot of the message. Errors are reported to us automatically, and the time is what lets us find yours.