I did not write to him in a personal, but several times left messages in his threads. I don't know what to do with it. Probably, to stop his plagiarism, I need to pay him, maybe then he will become more attentive to the rules.
But seriously, I have doubts about its adequacy.
Then you did what you could, and he can't even say that he didn't know about the issue (not that would absolve him anyway) as he continued doing the same thing, and probably won't stop until he gets banned. To quote one line from one classic movie, "To some man you just can't reach".
I also reported to mods that last plagiarism case, hopefully that helps and he gets removed from this forum. At least until he comes back with a new account.