Empire Market is fine and most popular Darknet Market at the time. Being this great has it's consequences continuous Ddos attacks causes primary Empire Market URL to be down, and alternative mirror as well. That means that empire marketplace have to make a lot of URLs and onion mirrors and links. And the problem is that there is not much ways users can find a active Empire Market link.
So that's why Empire Marketplace decided to create an official page where their users can always discover fresh URLs and onion mirrors, for quick enter to Empire Market. Here it is http://empiremarketurl.com make sure you using every time you want to login to darknet market empire market.