I am always annoyed by etherdelta's user interface. It is hard to use usually in mobile device and hard to scroll down especially when buying or selling. Unlike other trading sites have good UI. I can't stop using etherdelta because most of my tokens are only tradable in their slow site.
I dont like using EtherDelta too. I find it very hard to trade there. One slight mistake and you will lose all your coins in EthereDelta. I heared a lot of people having problems there; having their coins lost. Its not a user-friendly Exchange. I prefer Idex compared to EtherDelta.