Sounds like a phishing attempt. Definitely a scam. Just delete and ignore it. Someone who doesn't speak German and whom you don't know sends you a message in English. At some point earlier, you opened some real estate website of the respective municipality in your browser, so you were tracked via cookies and someone got hold of your email address (probably just a bot and not even a human). The person introduces themselves by their first name (typical phishing – usually in such emails in English it says something like: "I am Harry and I live somewhere in Africa and I have inherited several million in Germany, which I cannot collect for some reason. You were recommended to me as a trustworthy person, and I ask you to collect the inheritance for me, and as a thank you you get 20% of it." In the end, someone wants a copy of your ID and your credit card, and then YOUR money is gone. It will be no different here. The person who sent you the mail is certainly not the one whose ID copy you received. The ID copy probably belongs to someone who fell for a similar mail, and this ID copy is now being freely reused by the scammers.