안녕하세요~^^

테스트해보니 아래와 같습니다.

1. 비밀글 비밀번호를 입력해서 비밀글을 읽고

2. 해당 글에 댓글을 작성하고 나서

3. 비밀글 게시글의 비밀번호를 다시 입력하도록 하고 있습니다.

원래대로라면 비밀글 비밀번호는 한 번만 입력하면 되는데요.

직접 비밀번호를 다시 입력하도록 수정하셨는지요?

수정하신 게 없다면 '세션'을 사용할 수 있는 서버인지 웹호스팅 서버 관리자에게 문의를 해보시겠어요?

고맙습니다.

웹호스팅업체에서 세션 사용이 가능하다는 답변을 받았습니다

제가 수정한 부분은 없습니다

댓글 list.php 내용입니다

작성자와 비밀번호 부분만 수정하였습니다

<div id="kboard-comments-<?php echo $content_uid?>" class="kboard-comments-default">
 <div class="kboard-comments-wrap">
  
  <div class="comments-header">
   <div class="comments-count">
    <?php echo __('Total Reply', 'kboard-comments')?> <span class="comments-total-count"><?php echo $commentList->getCount()?></span>
   </div>
   
   <div class="comments-sort">
    <form id="kboard-comments-sort-form-<?php echo $content_uid?>" method="get" action="<?php echo $url->toString()?>#kboard-comments-<?php echo $content_uid?>">
     <?php echo $url->set('uid', $commentList->content_uid)->set('mod', 'document')->toInput()?>
     
     <select name="kboard_comments_sort" onchange="jQuery('#kboard-comments-sort-form-<?php echo $content_uid?>').submit();">
      <option value="best"<?php if($commentList->getSorting() == 'best'):?> selected<?php endif?>><?php echo __('Best', 'kboard-comments')?></option>
      <option value="oldest"<?php if($commentList->getSorting() == 'oldest'):?> selected<?php endif?>><?php echo __('Oldest', 'kboard-comments')?></option>
      <option value="newest"<?php if($commentList->getSorting() == 'newest'):?> selected<?php endif?>><?php echo __('Newest', 'kboard-comments')?></option>
     </select>
    </form>
   </div>
   
   <hr>
  </div>
  
  <!-- 댓글 리스트 시작 -->
  <?php $commentBuilder->buildTreeList('list-template.php')?>
  <!-- 댓글 리스트 끝 -->
  
  <?php if($commentBuilder->isWriter()):?>
  <!-- 댓글 입력 폼 시작 -->
  <form id="kboard-comments-form-<?php echo $content_uid?>" method="post" action="<?php echo $commentURL->getInsertURL()?>" onsubmit="return kboard_comments_execute(this);">
   <input type="hidden" name="content_uid" value="<?php echo $content_uid?>">
   <input type="hidden" name="member_uid" value="<?php echo $member_uid?>">
   
   <div class="kboard-comments-form">
    <?php wp_nonce_field('kboard-comments-execute', 'kboard-comments-execute-nonce')?>
    
    <div class="comments-field">
     <textarea name="comment_content" placeholder="<?php echo __('Add a comment', 'kboard-comments')?>..." onfocus="kboard_comments_field_show()" required><?php echo $temporary->content?></textarea>
    </div>
    
    <div class="comments-field-wrap">
     <?php
     // 댓글 입력 필드 시작
     ob_start();
     ?>
     
     <?php if(is_user_logged_in()):?>
     <input type="hidden" name="member_display" value="<?php echo $member_display?>">
     <?php else:?>
     <div class="comments-field">
                                          <input type="hidden" id="comment_member_display" name="member_display" value="비회원">
                                        </div>
     <input type="hidden" name="password" value="<?php echo uniqid()?>">
     <?php endif?>
     
     <?php if($board->useCAPTCHA()):?>
      <?php if(kboard_use_recaptcha()):?>
       <div class="comments-field">
        <div class="g-recaptcha" data-sitekey="<?php echo kboard_recaptcha_site_key()?>"></div>
       </div>
      <?php else:?>
       <div class="comments-field">
        <label class="comments-field-label" for="comment_captcha"><img src="<?php echo kboard_captcha()?>" alt=""></label>
        <input type="text" id="comment_captcha" name="captcha" value="" placeholder="CAPTCHA..." required>
       </div>
      <?php endif?>
     <?php endif?>
     
     <?php
     // 댓글 입력 필드 출력
     $field_html = ob_get_clean();
     do_action('kboard_comments_field', $field_html, $board, $content_uid, $commentBuilder);
     ?>
    </div>
    
    <div class="comments-submit-button"><input type="submit" value="<?php echo __('Submit', 'kboard-comments')?>"></div>
   </div>
  </form>
  <!-- 댓글 입력 폼 끝 -->
  <?php else:?>
  <div class="kboard-comments-login">
   <?php
   // 로그인 메시지 출력
   do_action('kboard_comments_login_content', $board, $content_uid, $commentBuilder);
   ?>
  </div>
  <?php endif?>
 </div>
</div>

<script type="text/javascript" src="<?php echo $skin_path?>/script.js?<?php echo KBOARD_COMMNETS_VERSION?>"></script>

해결하였습니다~

맨아래 로그인페이지 출력 삭제하니 되네요~

감사합니다~