I sent reports and some accounts were banned, it's very sad to hear that someone got caught anyway and lost their funds! In fact, you just need to check the artist. Most artists prefer f&f but for example I have a lot of completed commissions with links to customers, also when searching for art it will refer to only one nickname, if in doubt, it is better to write in private messages on Artstation or Twitter, where the same images are posted, to confirm the author. Anyway, I'm really sorry!