Visited on September 13 and did a short charge with Google Pay.
The parking is indeed accessible 24/7. There are parking meter signs, including one behind each charging space in combination with the EV symbol. But I was not able to find any parking meter. It's probably not yet installed.
The chargers are sideways, so you need to watch out for which space will share with who. You can park 2 vehicles on the same side, and they won't share units if there's nobody on the other side.
The charger IDs mapping is:
Charger 1
Left 7953 => PP13
Right 8842 => PP42
Charger 2
Left 6382 => PP43
Right 7573 => PP12
There are contactless readers installed. 0.55CHF/kWh, same as Swisscharge.