Everspring AN158 displays wrong values (20x too high)

[BartSr]

Hi!
I am having a number of power adapters according Zwave node data: Everspring AN158 who are showing weird data.
This adapter shows data for 3 devices : On/Off switch; Current power indication; Current power indication + cumulated power.
The last one is displaying weird (current power)data.
Domoticz shows 26 W consumption. Than I take a look in the log file which shows about 20x 26 = ca. 520Watt.

So I wonder, how is this possible?
Anyone who can give me a hand on this strange behaviour?
For the records the device: "Current power indication" shows both the correct values.

TIA
-Bart