Visited yesterday without charging.
I didn't notice any change.
There's something I realized later after my previous visit but couldn't confirm. The parking meter doesn't take a plate number, but an "old school" parking number. And the charging spots don't have any number. So I guess they are not actually paid. The numbers for the other parking spots are displayed on the wall, but the charging spots have that green "Stromtankstelle - nur zum Aufladen" sign. 11 and 12 are the spots to the right of the charging spots.
I think I photographed the wrong payment machine last time, it might have been the one from the other side of the foot passage. Yesterday's pictures are of the payment machine we see in the wide shorts right next to the chargers.