In general this is a decentralized exchange based on the BitShares chain. It is really confusing to create an account in this exchange. Before making any transaction I recommend reading all the official information in addition to the most common questions and answers in order to avoid mistakes that may cause you to lose your funds.
To understand this exchange you have to have notions of how to use BitShares and how to interact with this project.
Its main problem is the use of this exchange since its use is complicated.