"OKEx always has the customers' best interests at heart, and we are dedicated to providing the best products and technologies to protect our customers. Transactions were suspended for several hours due to the incident. Please accept our sincere apologies for the inconvenience caused," the platform's team wrote in its notice. The announcement came in the wake of widespread criticism from users, who complained that OKEx's system can't prevent what was seen by many as maliciously intended activities. Some investors went as far as to allege that OKEx itself was involved in the alleged manipulation. OKEx has not responded to the comments.

https://www.coindesk.com/crypto-exchange-okex-to-roll-back-trades-after-irregular-futures-plunge/