I personally wouldn't recommend anyone use etherdelta if you using it for big amount of money use at your own risk, the site is extremely unstable, orders get stuck , sells gets stuck, buy orders get stuck and just vanish without a trace.... Nothing seem to ever work correctly. Owner of site has not fixed any of those issues. The platform is a traders nightmare...
The UX is not ideal, but let's be realistic. This is a decentralized exchange: you control all funds and trade P2P directly on the blockchain via smart contract. I hope that this will be smoother in the coming years with more sophisticated DEXs being developed. But for the number of markets that Etherdelta has, it's about as good as it gets right now. Crypto-bridge has a really nice interface but hardly any markets or liquidity.
Personally, I've never had any major issues. Sometimes orders never show up on the book and I have to resubmit them, and sometimes it helps to refresh to see current order book, but that's about it.