Hulu no longer works on my Apple TV. It gives the appearance that it is about to connect but minutes go by with no message nor connection

Update your Apple TV system software to the current version, if not done already. How to update your Apple TV - Apple Support

Try this for any misbehaving app:

1. Force-quit the app, then relaunch and try again.
2. If the issue persists, force-quit the app, restart the device, then relaunch and try again.
3. If the issue still persists, delete the app, re-download and try again.
4. If the issue still persists, then contact the app developer for further assistance.