Visited on May 15 and did a short charge with M-CHARGE RFID.
I had trouble finding the entrance to the parking. I did not realize the entrance was so far away from the store itself.
There was an issue with the way the chargers were documented in the M-CHARGE app. The "pool" marker was at the correct parking entrance coordinates, but if you selected any charging point and pressed "navigate", you were taken to the store coordinates, not the parking coordinates. I reported the issue and it seems to have been fixed. Now if you navigate to the station using the M-CHARGE app and your GPS, you will arrive at the correct place.
When you navigate to the address of the store instead of the parking, there isn't a single sign telling you where the parking entrance is. If you arrive from the freeway, you never pass any sign because you actually need to continue towards the second roundabout and only there you will see the "Einkaufszentren" sign.
The parking entrance is split between Migros and Coop. Behind the Migros entrance there's an M-CHARGE sign. You then drive through the bank underground parking, and finally arrive in the actual Migros parking under the Migros store. There are more EV signs and even EV parking space counters along the way.
The DC and AC chargers are in separate islands, though you easily see each other.
There is no gate, and parking seems to be free.