As everyone had known, China shut down mining in the middle of 2021. Hashnest stopped paying by there. They promised to buy back hashrate, but only a few types. And today when I checked they closed their site. Gone with people hashrate. The investors lost their money including me, I'm seeking help. Hashnest was formed by Bitmain but they sold them. Is there any way to force them to pay back the money they took from us?