They require passport or some sort of ID on registration, and it is weird when compared to others. I was not happy with that part, but I am happy customer since (almost a decade now).

As far as I know, they do not require any ID when canceling the service.

Well I would appreciate that, since I was victim of russian hackers and they had access to all my servers and stuff on Hetzer, they even changed passwords and mail on Robot but i restored everything...