I am very puzzled, why would anyone use custodial mixer with risk of owner running away with money, when there is open source and decentralized JoinMarket mixer? It's multisig with all other participants, no way someone can stole money or identify you. With custodial mixer, everything can go wrong and eventually, it will. But with decentralized CoinJoin mixer (CoinJoin it's a mixing protocol designed in 2013!) like JoinMarket, it simply can't.