I've been hearing that YoBit is a scam since the start of my crypto-journey in 2017. Somehow it exists till today. Not a financial advice as I have never used it personally (partially due to this accusations) but that must keep one thinking.
There was few scam accusations some time ago but mostly because they have too many shit coins and they was pumping them for good profit and they are still going with these all so just because of this too much concern about this exchange and few time they have wallets under maintainance which take long time to settle deposites and withdrawals I personally use few times and have never any issue as mostly I love to sell Bitcoin, Litecoin and Ethereum for Perfect Money so its works good for me in this all.