Reset your kits.yml in order to update

Now when players write /spawn while in kitpvp they are give slowness 6 ,inventory cleared and set a health set a half health. It is to prevent players being able to escape combat writing /spawn
Now you can disable kits via kits.yml. The kits that can be disabled are Gladiator,Bomber,Anchor,Phantom,Airman,Stomper,DoubleJump and Spiderman