Plugin does not work for me

[yttalium]

Hello, I wanted to use your plugin on my server, however I could see that it did not work. When a player has PVP disabled they can still hit and be hit. I am attaching my configuration file to you.

Good day to you.

Server 1.15.2 Paper
Plugin version: 1.7

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SETTINGS:
##Do you want the plugin to remember a player's last PVP state when the login
PERSISTENT_PVP_STATE: true
##How much time a player must wait to use /pvp off/toggle (if pvp is on) in seconds after running the command or being in pvp
COOLDOWN: 600
##True makes pvp off by default. False makes pvp on by default.
DEFAULT_PVP_OFF: true
##Show PVP on particle effects
PARTICLES: false
##SHOW PVP on red nametag
NAMETAG: false

Worlds to disable PvP toggling in (i e will always use the world s settings)

BLOCKED_WORLDS: []
## goes in place of a player's current pvp state
## goes in place of a player's name or other parameter
MESSAGES:
HELP_HEADER: '&a&lCommandes:'
HELP_GENERAL_USEAGE: '&aUse /pvp {toggle|on|off|status} to change/view pvp state.'
HELP_VIEW_OTHERS: '&aUse /pvp to see another players pvp state.'
HELP_SET_OTHERS: '&aUse /pvp {toggle|on|off} to set another players pvp state.'
NO_PLAYER: '&cCould not find a player by the name '
COMMAND_INVALID_PARAMETER: '&c is an invalid parameter. {toggle|on|off|status}'
COMMAND_NO_PERMISSION: '&cYou do not have permission to set others pvp state.'
PVP_STATE_ENABLED: '&8&lYtta&c&llium >> &cVous pouvez maintenant attaquer et être attaqué'
PVP_STATE_DISABLED: '&8&lYtta&a&llium >> &aVous ne pouvez plus attaquer ou être attaqué'
PVP_STATE_CHANGED_OTHERS: '&a had their pvp state changed to '
PVP_STATUS: '&aYour pvp is set to '
PVP_STATUS_OTHERS: '&a has their pvp '
PVP_DISABLED: '&cYou have pvp disabled!'
PVP_DISABLED_OTHERS: '&c has pvp disabled!'
PVP_COOLDOWN: '&cToo fast! You can turn off pvp in seconds.'
PVP_WORLD_CHANGE_DISABLED: '&aYour pvp has been disabled because the world you entered does not allow pvp.'
PVP_WORLD_CHANGE_REQUIRED: '&aYour pvp has been enabled because the world you enter requires pvp.'
PVP_WORLD_CANNOT_CHANGE_SELF: '&cYou cannot change pvp state in this world.'
PVP_WORLD_CANNOT_CHANGE_OTHERS: '&cYou cannot change pvp state in that world.'
`