Plex Setup Noob

Hey everyone, sooo for the past few months I have been using Netflix and Amazon for streaming videos on numerous devices, all has been working great. But someone told me about Plex so I did research and it looks promising.

The best part. QuickBox has Plex Plugin.

The only issue is that I am complete noob when it comes to Plex.

I have managed to install Plex plugin via Package Management Center along with the other 2 plugins;

Would I need to install the above 2 plugins in order for Plex to work?
Also, after installing Plex plugin button appeared. When clicked I was given an error message:-

Service Unavailable
The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.

Can someone please help me out here.


No plex will work without both of those plugins
Sometimes installing plex is a bit of a pain.