Visited on Monday and did a short charge with Swisscharge app, no problem.
There are 4 parking spots indicated "Nur Elektrofahrzeuge" in front of the business. It's not clear who this is for, but there's nothing saying the public cannot use them. This side of the building is indicated as the Besucherparking. There are no gates. There is CCTV.
The DC charger is a Kostad Unity 120kW. The power share seems to be 60+60, as I was stuck at 59kW while the other car was taking 19kW. Maybe the power would be in steps of 30kW at 400V? The Kia is 800V so it might have been occupying 2 power modules depending how it's implemented inside.