player cant send message

ok so i try to create register plugin but then i have seen this problam
all the time when i try to send message the message dont send
please try to relate what i say and dont ask what exactly is this code supposed to achieve
(sorry about my english)
tanks for answers !

PHP:

      public function onJoin(PlayerJoinEvent $event){
       $pl = $event->getPlayer();
      $this->lgn[$pl->getName()] = 0;
       $cfg = $this->cfg;
      $plcfg = $cfg->get($pl->getName());
      if($plcfg != null){
      if($plcfg[1] == $pl->getAddress()){
        $this->lgn[$pl->getName()] = 1;
        $pl->sendMessage(TextFormat::AQUA."you are authenticated by ip");
      }else{
      $pl->sendMessage(TextFormat::AQUA."Login with your password !");
      }
      }else{
      $pl->sendMessage(TextFormat::AQUA."You need to register : type your new password !");
      }
      }
      public function onMove(PlayerMoveEvent $event){
          if ($this->lgn[$event->getPlayer()->getName()] === 0){
          $event->setCancelled();
      }else{
         
      }
      }
     
      public function onChat(PlayerChatEvent $event){
          $pl = $event->getPlayer();
          $pln = $pl->getName();
          $msg = $event->getMessage();
          $cfg = $this->cfg;
           $plcfg = $cfg->get($pln);
          $lgin = $this->lgn[$pln];
         
           
           
          if($lgin === 0){
          $event->setCancelled();
          if($plcfg != null){
          if($msg == $plcfg[0]){
           $pl->sendMessage(TextFormat::GREEN."you are authenticated !");
            $lgin = 1;
          }else{
            $pl->sendMessage(TextFormat::RED."This is not your password !");
          }
          }else{
           if(isset($this->a[$pln])){
              if($this->a[$pln] == $msg){
              $pl->sendMessage(TextFormat::GREEN."you are authenticated !");
              $cfg->setNested($pln,[$msg,$pl->getAddress]);
              $lgin = 1;
              }else{
                 $pl->sendMessage(TextFormat::RED."passwords do not match !
                 Type it agin !");
                 $this->a[$pln] = null;
              }
          }else{
              $pl->sendMessage(TextFormat::AQUA."Please re-enter your password to confirm");
                $this->a[$pln] = $msg;
          }
          }
      }else{
      }
      }
     
            public function onCommandPreprocess(PlayerCommandPreprocessEvent $event){
          if ($this->lgn[$event->getPlayer()->getName()] === 0){
          $event->setCancelled();
      }else{
 
      }
      }


 

does your class implement Listener?

 

yes

 

HOOO ok thank you