In reality, there is nothing to settle. I'm not asking for compensation from all the criminal acts and defamation (he went as far as suggesting that the supposed real owner was dead and I had something to do with it!!). At least, I'm not asking for it here.
He will just have to convert my money to bitcoin at current international price and return it. Plain and simple. Including the small amount on XRP.
But after 4 years, I have little doubt that he won't do it until the Italian police goes knock on his door. This went too far. If he thinks he can just put a stone over it and everything will go on fine, he better be prepared for a nasty surprise.