Problems connecting to VPN on iOS 8 w/ OS X Server VPN

Alright, so about a few hours ago I purchased OS X Server, being intrigued by it's VPN capabilities. I enabled VPN and set it up, however I'm unsure if I even did this correctly. I'm pretty sure I've set it up incorrectly or the information I'm putting in my connection on my iPhone 6 (Settings>General>VPN) is incorrect.

I'm unsure of what the "Account" and "Password" fields are. I put in the account name and password used to log into my computer (not the "Full Name", the one that appears in the home (terminal command: open $HOME -r ) directory) and it still isn't working.

I keep getting this error when trying to connect:

VPN Connection

The L2TP-VPN server did not respond. Try reconnecting. If the problem continues, verify your settings and contact your Administrator.

Well, I am the Administrator so I'm lost there. Basically I need some kind of tutorial that assumes I'm a full on retard. I've asked multiple friends of mine that were keen Apple users and searched around on Google for more than hour and I couldn't find anything that could help in my situation.