They definitely should upgrade their servers, otherwise they will just lose their customers to competitors who are nos starting to appear. It's an irony that right now they decided to make an ICO to sell token of their site.
ED has no servers, it's a dappl running on the ethereum platform. Basically it's just a primitive GUI front end to a smart contract system.
OMG, this is really something I would have never suspected! Well, all things considered I cannot but admire the devs who have setup such a smart decentralised exchange. Even though in the practical use it sucks, one cannot deny that it is techically very brilliant.