Yobit is a scam, they not only emptied my wallets but deleted all my history too - it looks like a brand new account! I have proof of a transfer of 0.105 BTC from Bittrex to Yobit, and that was received on Yobit on 8th Jan. I then used that to buy 10,000,000 PAC, and I then had a PAC balance of 10,000,000 and a BTC balance of 0.005 (or maybe a bit less due to the transaction fee). But when I next logged in a month later, all balances are zero. The worst thing though is that there is absolutely nothing in my history, no record of the deposit of the 0.105 BTC, no record of the purchase of 10,000,000 PAC. There is no record of any activity ever in my account now, so it's either an honest mixup or outright theft. Obviously I logged a support ticket but no response whatsoever. I've also filed a report here just today, so anyone else having similar problems could try this -
https://complaint.ic3.gov/default.aspx?#Wow, as bad yobit is, I've never seen them delete accounts outright and delete the history too.
Don't expect anything from yobit support, because if you don't have any proof, not even any screenshots, then they're not going to be doing anything. Are you sure that you didn't login with an alternate account that you used that didn't have the money, though?
If you received the transaction into your account, and already used it to buy PAC... And you can also confirm that it's the right account you're logging in with, then it's definitely something wrong with yobit. Good luck with resolving this, I just don't see it going too far though with the lack of proofs.