Visited on Thursday without charging.
I assume the chargers are for their customers, but that's not explicitly said. The text above the stations reads "Parking space for e-cars - You will find additional parking spaces in our underground parking at the Steinenstrasse 4" in German and English.
2 parking spots are painted with the EV logo. Each station has 2 copies of the same QR code.
The stations are numbered 2 and 1, which matches with the plug numbers in eCarUp. In eCarUp the connectors are also named right and left, which I checked matches with the actual order.