Its looks like an exit Scam to me and not hacked.

Here is what happening in live coin right now. https://latesthackingnews.com/2020/12/27/livecoin-cryptocurrency-exchange-hacked-losing-control-of-all-servers/  you can find too many complain in twitter saying how many BTC they lost and deposit not appear in the balance . its a big lost too many if they really plan to exit at this time as there are many people use that exchange someone even mention they deposit around 300 BTC.