Create a child theme and copy comments.php file to child theme folder. Edit the comments.php of child theme and replace line 90 which contains <?php comment_form(); ?>
Replace the code of line 90 with the following code
<?php $args = array(
'comment_field' => '<p class="comment-form-comment"><label for="comment">' . 'Feedback' . '</label> <textarea id="comment" name="comment" cols="45" rows="8" maxlength="65525" aria-required="true" required="required"></textarea></p>',
'label_submit' => 'Post Feedback',
); ?>
<?php comment_form($args); ?>
Let me know if you have any further issues.
Also, for future reference, you can choose to post in your queries to the theme’s official support forum for dedicated and swift support at :
https://catchthemes.com/support-forum/forum/clean-journal-free/
