SpleefUltimate - Only OPS can join?

Hello, I'm having a lot of fun with this plugin, except for the fact that only OPS can join the game! I added the permission nodes and everything in my groupmanager plugin file (essentials) but it still says the don't have permission when they type /spleef join Spleef (The game is called Spleef)

Any ideas on how to fix this? I've been looking for a while

 

Is there like an OP only variable in the config?

 

what do you mean?

 

In the config file, does it have a thing saying: "OPs Only: true"

 

Well I use groupmanager so there's no false or true options in that file. Do you mean in an essentials file or something? Thanks a lot for the fast reply

bump.. please help

EDIT by Moderator: merged posts, please use the edit button instead of double posting.