I personally feel that they don't care about the signature campaign anymore, hence why they haven't done any payouts to anybody over the last week that I know of. All they will say is the wallet is empty and will payout once it is replenished. Well when are you going to replenish? The next halving? No formal statements, no nothing, expect nothing.
It's not the first time will their signature campaign wallet is empty, it's usual thing and no need to worry about it, it will be soon refilled. If you don't like this campaign or you don't trust Yobit, you are free to leave campaign.
No, I think what he means is that it shouldnt take over a week to replenish the wallet.
They're a crypto exchange, they should have these funds in some of their wallets.
If they're actually out of bitcoins then there might actually be a problem.