They made a mistake, but support corrected it in an acceptable timeframe I give Poloniex 3 stars, because my experience was mixed and not ideal, but support resolved the issue acceptably quickly. I transferred cryptos to the site several times without problems but the last time the transfer just vanished from my history, although the tokens did arrive based on the blockchain records. This shocked me and I immediately thought of a scam. I contacted the support and they responded after a few hours and told me, that the will forward this information to the technical department. After not hearing from them for 3 days I contacted the support again and they assured me that they are processing my request. Two days later the deposit arrived. So it took 5 days to resolve the issue, which is acceptable for me, but the errors on the website should be resolved in the future to avoid such errors.

Limit sell orders were not executed and… Limit sell orders were not executed and market sell orders were held for a moment followed by a red wick and at the bottom of the wick my order was sold 8% lower.

Poloniex is now making fool of their… Poloniex is now making fool of their users. The team poloniex is celebrating 9th anniversary by stolen currencies from my secured account. They stole my 242,149,770 Shibu inu and 49,725,497,58 Satima token. Now I request other users please withdrawal your all currencies from Poloniex, otherwise you will be cheated soon.

Poloniex & Circle are a SCAM!!!! STAY AWAY!!!!! WARNING - DO NOT USE THIS SCAM EXCHANGE!!!! Locks accounts leaving users unable to withdraw their coins. Absolutely no customer support whatsoever - all support tickets are ignored. This exchange is owned by Circle.com - look them up on TrustPilot - their reviews are the same, stealing money, demanding ID, blackmail, scam, etc, etc. Poloniex & Circle are a SCAM!!!! STAY AWAY!!!!!

Poloniex used to be great in 2015/6 Poloniex used to be great in 2015/6. They have become worse and worse again as time has passed, coins/tokens have vanished and trading is near impossible within the UK now, my savings held in poloniex have vanished, I am completely frustrated and disappointed with them.