Thanks Javi. I upgraded to 6.0.4 and got the same result (a little worse; more than 30 seconds). I disabled each of the controllers to isolate and got the same result on each. Hopefully UDM 1.4.15 addresses the issue.
Since upgrading to version UD 1.4.14, it's taking upwards of 20 seconds for device statuses and programs to update (prior it was 3 or 4 seconds). I've noticed this on multiple devices. All running 1.4.14 and all statuses hanging since upgrade. I've tried rebooting IoX (V6.0.3) and still get the same results. Note: I have 2 IoX locations and this is occurring in each location whether on WIFI or not. Is anyone else experiencing these delays?
This happened to me as well a few months back. You need to install the newer Sensibo plugin version 2.0.13. To make it easier, install that plugin first, then copy your old configuration info over before deleting the older plugin. Once installed, just close your browser and re-login. The power state should correctly show On/Off state.