poloniex scam soon, go to other exchanges until it's too late
ethermine.org - If you mine ETH or ETC to a @Poloniex wallet an have not received a tx don't create a ticket with us, contact @Poloniex support directly.
Polo credit your account for ETH and ETC only, if you receive more than 1 entire coin. (Recently it seems that for ETH it's lower as last 2 times they credit my account after 0.5ETH)
And :
"Due to ongoing network instability, we've disabled Ethereum deposits/withdrawals. We'll enable once we know the network is functioning properly.
Posted by MobyDick at 2017-06-22 17:50:35"