That would happen if your local network was experiencing a network connectivity issue to the outside world. — Staff replied: “Perhaps you're on the East Coast impacted by regional network outages there due to the hurricane. We'd recommend switching network types (WiFi->3G) or waiting for the issue to resolve.”
That would happen if your local network was experiencing a network connectivity issue to the outside world. Restarting Roomie or your iOS device will force it to try again if you'd like and if you believe the local network connectivity issue has been resolved.