Visited on May 21 and did a short charge with Swisscharge RFID on the Kempower. No issue.
There aren't any sign when entering the parking to let you know where the chargers are. Depending on the amount of cars parked you might be able to spot them from the "ring road". If you follow the GPS to the Swisscharge coordinates you should find them. You can also drive the entire ring road, then re-enter the parking just before the exit when you see the chargers.
No contactless terminals here at the moment.
Parking is free and there are no gates.
The chargers are between the shopping center and the gas station, so it's not very far to walk to Coop Pronto when the shopping center is closed.