Exactly my thought... according to the article the freelancer and Robin know each other and are in good terms. If Robin realized he defrauded Upwork by mistake

Exactly my thought... according to the article the freelancer and Robin know each other and are in good terms. If Robin realized he defrauded Upwork by mistake, he should just pay up. If he doesn't, then he is actually willingly defrauding upwork, who should throw the book at him.