Ring doorbell disconnected

All of a sudden today, my Ring Doorbell has dropped connection to my wifi. Nothing has changed. I've had no internet outage and yet I can't connect to it. Has been working fine for four years! I've tried six times now to reconnect and nothing happens. It flashes two white lights on the right and takes me back to the set up screens again. I also have a Chime and that's still connected to the wifi so makes no sense why the doorbell won't connect. Help!