Thanks for your reply.
Yes, it seems that I am getting some errors from an un-plugged zigbee socket (installed Sunday, 4th December, and unplugged yesterday or previous day as it is not working) – I have now removed it from the “Devices” list!
However, this still does not fully explain why the hub has been suffering since 28th November and strangely why 5 minutes past the hour?
Please note that the only other message I have been getting for some time now is the warning message below:
While it's not good to just unplug a device without removing it, I'd be surprised if that was enough to cause the radio to shut down. Same with the cloud request.
Tracking these down can be a bit tricky. I'd look at your app and device logs and see what apps are generating the most load and start there. As @Rxich mentioned third party apps are someplace to check.
Do you have a backup from before 11/28 that might give a clue as to what the app was?You can restore the older backup(Make a new backup FIRST) and see what is pinging the hub, then once identified, disable the connection from the app making the calls to the hub
Unfortunately, the oldest system generated backup is from 2nd December which is the second time the zigbee offline message was received.
I could try and load that backup, but could you kindly explain how I go about checking what is pinging the hub?
Thanks, I do not know when I started receiving the warning messages for app 1813, and I went back to an old backup from September and still could not locate app 1813.
How do I go about locating which apps are generating the most load, is it from the device and app stats logs?
EDIT: Is there anything obvious to investigate from the logs below?
I wouldn't stress over the missing app for now. Yes, pounding the hub may slow it down over time, but wouldn't cause Zigbee to go offline. I would concentrate on the Zigbee devices and overall health of Zigbee network. One or more Zigbee devices may be acting up and that would be enough to bring the Zigbee radio to its knees. If you added new Zigbee devices recently, consider removing them. If you have devices that you are no longer using, be sure to remove them. Shutting down the hub from Settings and keeping it unplugged for 30-40 min may resolve some problems. If the issue persists, you are likely looking into a Zigbee radio issue that may require a hub replacement. If this is a fairly new hub or have Hub Protect, please be sure to create a warranty claim by visiting support.hubitat.com.