Visited today without charging.
The DC charger is on the edge of the property. The left parking spot is marked "Privat" and the right one is blue with an electric car symbol.
There are 2 AC chargers under the roof among the "Kunden" parking spots, but I'm not 100% sure if those are the ones on eCarUp. They still have the old CH*BMI* QR codes that no longer work.
None of the chargers have any instructions.
The AC chargers constantly show "connected" on eCarUp (and "unknown" on opendata). No cars were plugged in but I suspect it might be stuck that way because they kept the AC cables in the AC sockets and that model of charger might either not permanently lock the cable or just reports it incorrectly.
It's not very practical to park in the blue spot. If you have a large car and want to fit in the lines you have to enter the main road during the maneuver.