Home Assistant with Innr SP240 and a 230v car charger

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I wanted to use the Innr SP240 to get insights of the car chargers usage. This I want to accomplish with the help of my home assistant setup that is already in place.

The Innr sp240 plug
Installed in the technical area where the 230v charger is located.
230v car charger, max is (I guess) 10A
Final setup when the car is connected to the charger

Setup Home Assistant

Adding the Innr SP240 is not that hard, when it is added to the Zigbee environment, this is the result:

The issue with the Innr SP240 is, that the power deliverd stays 0. Or at least, only changes when Home Assistant is restarted.
There are many fora that have different quirks for this, but I wanted to use some out of the box Home Assistant magic alled Riemann integral:

Riemann Integral configuration
The default Quirk

The cars information