@Angelb,

I would recommend starting by simply replugging the device; I would assume that the notification means that the device needs to refresh its connection to the cloud.

I would also recommend relogging into the Kasa app and checking for an update in case it is being caused by your app or login.

If both of those fail, you will want to do a soft reset of the device and go through the setup process again. With a soft reset (5sec compared to 10sec), only the network settings will be reset and you will only need to reconnect the device to your wi-fi. Your schedules and settings should remain with this mehod.