This is just the way they do at Yobit, putting wallets on maintenance mode. I've contacted them several times, they did respond quite fast and they put wallet back on, but only for several days, like 2-3 days. Solution would be to move to Tokens and trade there but withdraw fees is way too high by my opinion (5000 LANA). But on the other hand, their security level is top notch. I never like trading at Yobit, it doesn't feel safe but at the time of speaking, this is the really we are faced with. I guess its all about sellers and buyers to move their coins somewhere else, or maybe they just need some incentives to do that.