As told before, the bitch got fired at his company.
I spoke to one of his direct colleagues before and after he got fired and he verified this. (his boss who runs the department is from another country, luckily it is the same as I'm from, which helped a lot on communication)
There was however a downside to this which I didn't see coming. His colleague told he he was living in an appartment sort of owned by the company, so because he got fired, he had to leave. Of course this is even better, losing your job AND your house. However, nobody knows where he is. His colleague said he would go to Germany or back to Israel. Last thing he knew was that in the end he decided to go back to Israel. But yeah... finding him and sueing him will be even harder because at this point I have no new address and Israel is not in the EU which also makes things harder.
So I'm afraid everybody's money is just gone and we have to satisfy with the idea that he lost his job and his house (and many people in his life know the reason)
It actually sounds as if you're enjoying this.