For some reason I cannot reply to posts inside this thread. Strange.
Anyways, this is a reply to the reply to my post.
what they can do is to ensure the user cannot engage in any further illegal activity via this platform
Sorry for laughing very loudly about that. If itch was able to do that, there would not be an abundance of stolen stuff posted on itch over and over and over and over and over and over again by the same people. Itch staff often takes weeks to take down such accounts.
No one can hinder your "friendly" user to post your stuff even on itch itself. Sure, you can report his new account. And next week again. And the week after that.
I do not want to belittle your concerns, so sorry, if this sounds exactly like that. But you are not exactly losing money over this. If this is the official community for the tool and he posted unauthorized stuff, the mods and admins there would have dealt with this. Without making much noise. If you escalate, you risk ... well escalating. Gaining a stalker harrasser fan is not funny. Over what?
Sure, you might persuade itch staff to take action against that account. You might do the account holder some harm. But is this really worth it?
As I said, if this is the offical and legit community, he posted your stuff, he is not doing himself a favor. And he would not harm you by doing so, other than pissing you off, if you let yourself be angered by that. Ask yourself, wich dev would download your stuff from there with knowing that it was pirated? Not any dev that you would want to be your customer anyways, I want to bet.
So remove the posted stuff from the official forum and relish in the thought that he paid you money. What you are now doing is trying to have his account damaged, escalating and risking him taking revenge on you. And if you try to take real legal action, well, as I was saying, I am not a lawyer, but if I were one, I would laugh at you, after you explained the amount of damages he owes you for pirating the software asset. (you did admit that you only had 1 sale so far. The consulation fee for a lawyer is many times more than that.)