I suspect that means they're still on the old wallet version and on the old chain. That's the current height on the old version and that chain is now very slow. That block was generated over an hour ago. The previous block was around 3 hours before that one.
Be careful with yobit, as they sometimes don't update wallets and sellout coins on old chains....
The Old wallets are not able to send any Coins anymore. They must upgrade to sell something and on the old chain is not possible anyway.
if so Why is there daily volume on https://yobit.net/en/trade/EGC/BTC
Thats just bots or people trading coins already there. Mostly it looks like bots adjusting to price on other exchanges.
Deposits are off, and withdrawals seems to be on the old wallet. (but that was also the case at bittrex-status until they opened the new on.. its just pointing to the old daemon)
edit:
You could also trade coins on bittrex while their wallet was disabled.. this does not affect their holding.
I'm speculatively buying a few coins on there too from my sig earnings if the price drops more - just in case the closed/isolated wallet causes a rally. I was lucky with that a couple of times this month with some other coins on yobit. Pure speculation though - I already moved 75% of my yobit stock out.