CoreProtect Commands Problem

Hi,
I recently have installed CoreProtect to help with someone griefing around my server, so I wanted to use the commands, but was not able. The error i get is nothing. I will type in the help command (/co help), and will get nothing in chat, not even an incorrect syntax. Any help would be very much appreciated thanks!

Quote from Roman

Any errors in the console?

http://imgur.com/a/KKkQI
At first i thought there was something wrong in the stuff i typed in so i started messing around to see if other stuff would work, but none of them worked. But to answer your question no

Quote from Roman

Code

[22:54:39] [Server thread/INFO]: [CoreProtect] Enabling CoreProtect v2.14.2
[22:54:40] [Server thread/INFO]: [CoreProtect] Spigot 1.11 or higher is required.
[22:54:40] [Server thread/INFO]: [CoreProtect] CoreProtect was unable to start.
[22:54:40] [Server thread/INFO]: [CoreProtect] Disabling CoreProtect v2.14.2

That's a small part from your serverlog.

Did you want the hole thing? If you want the entire think i'm not able to show you it all, because aterno deleted a big chunk, since i got off and my friends have been on therefore leaving the server on.

Quote from MaxFOOD

What is the version of your server?

My server version is 1.8.7 bukkit

Quote from MaxFOOD

Core protect version 12

Ah ok thanks, i will update you if it works!