Empire Market is fine and most popular Darknet Market there is right now. Being this big has it's consequences constant Ddos attack causes prime Empire Market link to be down, and alternative mirror as well. That lead to empire marketplace need to create a lot of URLs and tor mirrors and mirror. And the thing is that there are not to many ways costumers can get a fresh Empire Market link.
So that's why Empire Market decided to create a special site where their users can at any time discover working URLs and onion mirrors, for instant enter to Empire Market. Here it is http://empiremarket-url.com be sure you using it every time you need login to darknet market empire market.