@Chalkie65 

Generally, smart devices will automatically reconnect once power is restored and the router's internet is back up. However, there are rare cases where reconnection to WiFi or the cloud fails. The causes can vary, requiring individual analysis based on the situation.

For issues with device connectivity, restarting is often an effective solution. You can try rebooting the router to see if the bulb can reconnect. If that doesn’t work, you may need someone to help restart the bulb, for example, toggling the circuit breaker at home. If the connection still cannot be restored, this issue will need further investigation, there are currently no other methods you can try remotely.