At the moment, izooomrud account is fully unblocked. He can withdraw or sell his funds. Concerning the situation with MONA, we posted news with detailed explanations following this link -
https://www.livecoin.net/en/news/view/261We are unable to bear more responsibility for an asset, than its developer. It is stated in the User agreement, which a user either accepts at signing up, or doesn't use our Service at all. The fact, that izooomrud used our Service, suggests that he agreed to this clause, saying the following:
The Service does not bear responsibility for losses incurred by vulnerability or any kind of failure of software (nodes, wallets) used by the third parties, or glitch in the software (nodes, wallets), provided by the third parties, as well as failure of blockchains or any other technical problems specific of Cryptocurrencies traded at the Platform. The Service is not liable for damages due to late report from cryptocurrency developers or representatives (or no report at all) of any issues with cryptocurrency including all sorts of forks, node technical issues or any other issues potentially resulting in fund losses.
I don't think this allows you to simply not allow withdrawals for over a year.
It might be understandable if you halted trading and socialized losses immidiately after you realized you had suffered losses due to a double spend attack, and most importantly, made your customers aware of the losses. Instead, you allowed the coin to continue trading for over a year, and allowed customers to pay money for MONA (and pay trading fees for doing so), but not receive MONA in their account balance.
Anyone who purchased MONA after you suffered losses due to the double spend would have a valid claim against you, even after considering the clause you cited.