Solved InventoryClickEvent not working on some servers, but working on some others

My plugin has an command which brings up a custom inventory. To make sure players cannot move the items out of the inventory, the plugin cancels the InventoryClickEvent if the Inventory name is the name of the custom inventory. Shouldn't be a problem right? Ok, so I test it on my server, (link to a video of me testing it) and it works just the way you would expect. Then, I send the plugin to the guy who requested it and he says that he can move the items in the custom inventory. He even removes all other plugins and can still move the items. And yes, I am definitely registering the event in the main class.

Code for InventoryClickEvent

Code:

package me.x1machinemaker1x.bounty.events;

import org.bukkit.ChatColor;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.inventory.InventoryClickEvent;

public class InventoryClick implements Listener    {
  
    @EventHandler
    public void onInventoryClick(InventoryClickEvent e) {
        if (!e.getInventory().getName().equals(ChatColor.UNDERLINE + ChatColor.GOLD.toString() + "Active Bounties")) return;
        e.setCancelled(true);
    }

}

Nevermind. Sorry bout that. It turns out he wasnt updating the plugin correctly