Permission heavyspleef.player.sign.join doesnt work

[Mxtt5]

Hi, nice Plugin!
But there is an issue:
I typed the permission heavyspleef.player.sign.join permission into
my permission plugin but the players without OP can't click on the sign.
The Chat say something like "[Spleef] You don't have the permission to do this"

Please help!

[Hunter9649]

I am having the same problem too can someone help us.