Hi there neighbors! When a Ring device is suddenly offline, the best things to check are power and connection. For neighbors with a Video Doorbell Pro, we’ve put together this helpful hardwiring guide that I use when supplying power to my Doorbell. For battery-powered Video Doorbells, please ensure that the battery is charged.
Next, please ensure there is not any wifi signal interference. Check out our Community post for tips on checking and optimizing your RSSI (wifi signal strength). Once a sufficient power and wifi connection is established, follow the steps here to reconnect your Ring device.
As mentioned above in this thread, a reset can sometimes help if your device is not responding to setup mode or reconnection attempt. If your concern persists despite trying these suggestions, please give our support team a call at one of the numbers available here. If you are outside of the US, please visit here to see how to contact support.