Poloniex is a cryptocurrency exchange that allows users to buy or sell digital assets such as Bitcoin, Ethereum, TRON, and other altcoins.The exchange has low trading fees and supports over 350 cryptocurrencies.Poloniex has a General Troubleshooting page on their support website that provides users with possible solutions to common issues. Phemex is trading platform is designed to be user-friendly and intuitive, with a customizable interface that allows users to tailor the platform to their specific needs. The platform also offers a range of advanced trading tools, including advanced charting and technical analysis tools, as well as a mobile app for trading on the go.