Operated by Stadtwerke Remscheid GmbH, Auf dem Knapp 19, 42855 Remscheid. To the whole charging station with all charge points, photos and experiences.
Without a filed public key a bill from here cannot be checked against the register. That does not mean the billing is wrong – only that it cannot be verified. The operator has to provide the key; with it the check still works.
This EVSE ID is not unique. It appears 2 times in the register. Under DIN SPEC 91286 it should be unique worldwide; a check via this identifier may therefore hit a different charge point. More in the interface documentation.
Everything else here is about charging stations – what the register treats as one installation. On site, though, you stand in front of one cable, and it carries an EVSE ID. An installation with six charge points has six different answers to the question whether a bill can be checked. This page gives exactly one of them.