If the server is showing up and says 0/70 it should be able to be joined. If your can't connect I would recommend filling out the form on the front of the website. Here is a link to it to help you out https://docs.google.com/forms/d/19p2_r2z9wyazMXiJIlFINw0M32WCoUkv039yemwR3lE/viewform