Ps: I do know the guy, talked with him before, a few friends have bought stuff from him in the past and never had any issue. But hey, It happend so I'm posting it here. If he somehow answers back and sends the money back I will delete this post.
A few days ago he made contact with me saying he had interface 474 code to sell.
And since I also develop interfaces, I was interested in buying.
He told me the price, said he only accepted advcash/volet. I asked if he had any other crypto wallet or paypal email. He said no. After a while, he came back with a paypal email, in which we sent the money. But since its a new account, paypal blocked it for safekeeping. After this, he returned the money and we went to check on how to make a advcash/volet account. After a bit, we successfully created a "volet" account and transferred the money to him in 2 parts. 5 EUR first to check if he received the correct amount and later the 595 remaining to complete the 600 EUR for the asked price of the interface code and editors for it.
His last message was on the 25th of September saying he wasn't home. Haven't heard from him since.
I asked a friend of mine if he was legit and if he worked far from home and he did confirm this for me. But still. I would at least expect him to keep in touch with me to update his whereabouts and saying if he would need more time to arrive home.
Here are the screens with the full discord conversation: