Offline - won’t reset, has red lights on

The doorbell is not working for 1 day now, it shows OFFLINE, I didn’t reset my wifi, and when trying to reset, there is no white circular light on the ringer. Nothing happens. Interestingly the doorbell has 3 red lights that are on and the device is hot, so there is power going through. I did restart the modem and still nothing. Did anyone ever encounter this? Performed other health checks and everything is fine.