Aeotech nano switch zw116 - energyDuration: unknown - and: looking for firmware

I was reading this through: Aeotec Nano Switch w/ Power Metering
and saw @jrengen has the same device with energyDuration displayed properly. My nano switch shows energyDuration: unknown while at the state variables, * energyTime : 1683539577995

Can someone pls help if its a driver or firmware issue? I have 2.x on this device and the driver is Aeotec Nano Switch.

Additionally I have a hard time finding the nonencrypted ota firmware for this device , mailed the vendor now, let's see but I have no high hopes that they sending me anything I can apply via hubitat firmware updater.

appreciated.

EU firmware: https://github.com/iris3th/home-automation/tree/master/device-firmwares

though it didn't solve the problem.

Any chance you have the US version?