User blog comment:Aftenshnoshnikr/Attack On Titan's Tribute Game/@comment-67.235.26.69-20141022221638/@comment-11227880-20141023003756

so, the server is trying to register that you are joinig. due to maybe connection problems or a vast majority of online players you may need to just click sign up/register and leave it for a few seconds, minutes or hours until it finally gives you the option to send the validation email. the PeerCreated bit just means that it has connected to your computer/ip address, I get peercreated all the time when I create my own server.