I deposit 2 ETH to the yobit by IMtoken before 1 hour .
but I still can't see any transaction in the history,
so I want know if the exchange was a scam exchange platform?
check your transactions on etherscan. I have long been trading in yobit and I think safe, indeed sometimes the deposit and withdraw process is very long. you can contact the yobit support team and include proof of your transaction or tx hash.