Livecoin either was hacked or has exit-scammed. I believe the latter is true.

I had some coins there too, however there is practically no chance they will return anything. They demand some crazy and humiliating KYC-like procedure to return your funds, but even if you agree to go through that procedure, there is absolutely no guarantee they will return your coins. They are not a registered business, they are not falling under any jurisdiction, so there is nothing you can do to force them pay. In fact, they even have no right to demand any kind of KYC from you, as they themselves are anonymous 'nobody'. You can just pass the procedure and hope they will return your coins at their free will. However there is risk they will just sell your self-identification material to others scammers on dark market. So... you decide whether your coins are worth the risk....