What are user reviews of the cryptocurrency exchange CEX.IO?

User reviews of CEX.IO are mixed, reflecting the varied experiences of its customer base. Some users praise the platform for its user-friendly interface, range of supported cryptocurrencies, and variety-facilitating fiat transactions. They also frequently mention the convenience of multiple payment options and the availability of advanced trading features such as margin trading. On the other side, there are users who criticize CEX.IO for its customer service, with some experiencing delays or challenges when seeking support. Others mention concerns over higher fees compared to some competitors and a lengthy verification process that can sometimes impede timely access to trading activities. Thus, while certain aspects of CEX.IO are lauded by numerous customers, particular areas such as customer support and fee structure may need improvement according to some user feedback.