How to disable a custom plugin

[richards112]

Ok right, i am going to go into full details:
I previously downloaded a points mod, and i connected it to my arcade.
And i created a new plugin So users have to pay to play a game, and when they dont have enough points, an error message comes up saying "You do not have enough points".
Ok now i have successfully removed that points hack, and evertything went along with it
But now each time i try and play an arcade game, it says
"You do not have enough points" when i clearly uninstalled the points system
Any idea how to fix this???
As my Arcade is useless until i find how to remove that plugin