You can to login at several Dark Web markets using only the alternative links, it suggests a tricky situation : upcoming vendees and dealers can't enroll before they will receive an alternative link from an previously registered user.
Look at http://deeponionmarkets.com/, it stores fresh alternative links to concerning Deep Web markets. You should go to these links in order to register on the sites.
Whenever there are some issues with an access,for example, links won’t work, you ought to wait and check for Darknet markets alternative URL. Carry on, for the reason that a several amount of the markets close and let signing up regularly, due to server load.