Geht nicht :(

import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.plugin.java.JavaPlugin;

import me.BukkitPVP.Lobby.Config;
import me.BukkitPVP.Lobby.SimpleConfig;
import me.BukkitPVP.Lobby.Events.LobbyEnterEvent;
import me.BukkitPVP.Lobby.Events.LobbyLeaveEvent;
import me.BukkitPVP.Lobby.Language.Messages;
import me.BukkitPVP.Lobby.Module.LobbyAPI;
import me.BukkitPVP.Lobby.Module.Module;
import net.md_5.bungee.api.ChatColor;

public class JoinLeaveMessage implements Module,Listener {

    @Override
    public String getName() {
        return "JoinLeaveMessage";
    }

    @Override
    public int getProductID() {
        return 0;
    }

    @Override
    public String getVersion() {
        return "0.1.0";
    }

    @Override
    public void load(JavaPlugin plugin, LobbyAPI api) {
        Bukkit.getServer().getPluginManager().registerEvents(this, plugin);
        Config.check((SimpleConfig)Config.getConfig(), "use-JoinLeaveMessages-module", (Boolean)true, "Enables or disables the Lobby Join and Leave messages.");
        //Config.check("use-JoinLeaveMessages-module", true, "Enables or disables the Lobby Join and Leave messages. Below you can change the Messages");
        api.addLang("jlmsg_join", "§aYou entered the Lobby !", "§aDu hast die Lobby betreten !");
        api.addLang("jlmsg_leave", "§cYou left the Lobby !", "§cDu hast die Lobby verlassen !");
        Messages.add("jlmsg_join", "§aYou entered the Lobby !", "§aDu hast die Lobby betreten !");
        Messages.add("jlmsg_leave", "§cYou left the Lobby !", "§cDu hast die Lobby verlassen !");
        Messages.load();
        Bukkit.getConsoleSender().sendMessage("§aLobby Module JoinLeaveMessages enabled !");

    }

    @EventHandler
    public void onLobbyEnter(LobbyEnterEvent e) {
        Player p = e.getPlayer();

        if(Config.getData().getBoolean("use-JoinLeaveMessages-module") == true) {
            p.sendMessage(ChatColor.translateAlternateColorCodes('&', Config.getData().getString("JoinLeaveMessages-module.joinMessage")));
            Messages.add("jlmsg_join", "§aYou entered the Lobby !", "§aDu hast die Lobby betreten !");
            p.sendMessage("debug join");
            Messages.msg(e.getPlayer(), "jlmsg_join");
        }
        else {
            return;
        }

    }

    @EventHandler
    public void onLobbyLeave(LobbyLeaveEvent e) {
        Player p = e.getPlayer();

        /*if(Config.getData().getBoolean("enable-join-leave-messages") == true) {
            api.addLang("LobbyLeaveMSG", "§cYou left the Lobby !", "§cDu hast die Lobby verlassen !");
        }*/
        if(Config.getData().getBoolean("use-JoinLeaveMessages-module") == true) {
            p.sendMessage(ChatColor.translateAlternateColorCodes('&', Config.getData().getString("JoinLeaveMessages-module.leaveMessage")));
            p.sendMessage("debug leave");
            Messages.add("jlmsg_leave", "§cYou left the Lobby !", "§cDu hast die Lobby verlassen !");
            Messages.msg(p, "jlmsg_leave");
        }
        else {
            return;
        }
    }

}