Unnamed exchange has been closed for quite some time, what are your chances of bringing a successful case against him? If memory serves correct, Tillkoeln is German, did you file the police complaint in the country he lives in or some sort of EU wide complaint?
I filed a police report and, as far as I know, the investigation is still ongoing.
Yes, he is from Germany. I think his real name even appeared in several places. If the investigation is persistent, they probably won't have a problem getting to him. If that hasn't already happened, apart from the fact that his domain has expired, I see that he hasn't been active on Twitter for a long time either.
I would like to hear some results of the investigation here against this scammer.