The 3-Step Registration Process:
1. Download the installer on the downloads page (you can’t miss it!)
2. Run the installer and choose “Join Server” from the main menu
3. Enjoy the heck out of our server!

Alternate Method (for use if launcher fails)
It’s rare, but sometimes Google security blocks registration thinking it’s an unauthorized user trying to attack the server. If this happens you will not be able to use the launcher to register. If this should happen to you; use the following method to join.

Go to the contact page located here and fill out the form in the following way

Email: yourfavoriteemail@whatever.com
Subject: Registration
Message: 
userName: yourUsernameForTheWebsite
mcName: yourMinecraftUsername (Case sensitive)