conflic quick chat Secure Invites

Okey the thing is if i click on o link the page wont load before quick chat send it’s ajax request to check message list and user list
Why that ?

anyone have an idea ?

Ok i have found the bug :

in plugin : secure invite :

function secure_invite_check_secure_page() {
	if (!headers_sent()) session_start();
	// set the invite code
	if (isset($_POST["invite_code"])) {
		$_SESSION["invite_code"] = trim($_POST["invite_code"]);
		header("Location: " . $_SERVER['REQUEST_URI']);
		exit();
	}

and the conflict is with (in quick chat) :

$startTime = time();

in :

public function update_messages_ajax_handler(){
        global $wpdb;
        $quick_chat_messages_table_name = $wpdb->prefix . 'quick_chat_messages';

        ob_start();
        header( "Content-Type: application/json" );
        header("Cache-Control: no-cache, must-revalidate");
        header("Expires: Sat, 26 Jul 1997 05:00:00 GMT");

        $rooms = implode('", "', esc_sql((array)$_POST['rooms']));

        $startTime = time();
        while((time()-$startTime)<=20){
            $sql = 'SELECT id, wpid, room, timestamp, UNIX_TIMESTAMP(timestamp) AS unix_timestamp, alias, status, message FROM '
                                                    .$quick_chat_messages_table_name.' WHERE room IN ("'.$rooms.'") '
                                                    .' AND timestamp > FROM_UNIXTIME('.esc_sql($_POST['last_timestamp']).') '
                                                    .' ORDER BY unix_timestamp ASC';

            $messages = $wpdb->get_results($sql);
            if($messages){
                foreach($messages as $v){
                    $v->timestring = date_i18n($this->date_format.' - '.$this->time_format, $v->unix_timestamp+$this->gmt_offset);

                    if (function_exists('get_simple_local_avatar')) {
                        $v->avatar = get_simple_local_avatar($v->wpid, $this->options['avatar_size'], '', $v->alias);
                    } else {
                        $v->avatar = get_avatar($v->wpid, $this->options['avatar_size'], '', $v->alias);
                    }
                }
                $response = json_encode(array('no_participation' => $this->no_participation, 'success'=> 1,'messages'=>$messages));

                echo $response;
                ob_flush(); flush();
                exit;
            }else{
                sleep($this->options['timeout_refresh_messages']);
            }
        }

        $response = json_encode(array('no_participation' => $this->no_participation, 'success'=> 0));

        echo $response;
        ob_flush(); flush();
        exit;
    }

Anyone ??