Visited on August 31 and charged with AVIA Volt RFID.
The charger is on the side of the building, at the end of the customer parking spots. I didn't try entering or leaving through the "tunnel" under the house, but I think it's also an option. I had to turn around in order to park backwards.
There's a contactless reader but it's not activated yet. The red sticker next to it lists the various payment options including "online by credit card", but I did not find the QR code for ad-hoc payment anywhere, either in print or on the screen. Therefore the only options to start a charge were the app or RFID.
The gas station and its shop don't seem to be listed on Google Maps. But there is indeed a shop, it's combined with the dealership lobby. I think I arrived just in time, because the sign outside indicates it closes at 18h on Sunday. They have a toilet in the lobby, I asked to use it, but it doesn't seem like they lock it.