Initially I haven't checked his address because I thought that he would make new address for each potential victim. Now I looked into it - now it's empty, but it received in total over 0.024 BTC in 2 transactions.
Then at least one thing is clear, and that is that the scammer does not use a unique BTC address for each victim, because that would mean tens of thousands or even hundreds of thousands of unique BTC addresses and editing every e-mail that is sent. You can also check if the e-mail was sent only to you, or if it contains multiple recipients.
Where exactly I can report this address? I saw similar kind of websites, but now I don't remember their names.
There are more of them and they are easy to find through search engines, for example
1, or
2.