Thank you for your help. I found the unwanted text inside the loop.php but had another message show up when I deleted the text, so I substituted the text with the name of our website.
See line 58 of the full script:
<?php if (have_posts()) : ?>
<?php while (have_posts()) : the_post(); ?>
<div id="post-<?php the_ID(); ?>" <?php post_class('clearfix post'); ?>>
<?php /* Posts navigation for single post pages, but not for Page post */ ?>
<?php if (is_single() && !is_page()) : ?>
<div class="post-nav clearfix">
<p id="previous"><?php previous_post_link() ?></p>
<p id="next-post"><?php next_post_link() ?></p>
</div>
<?php endif; ?>
<?php /* Post date is not shown if this is a Page post */ ?>
<?php if (!is_page()) : ?>
<div class="date">
<p><?php the_time('M'); ?>
<span><?php the_time('d') ?></span></p>
</div>
<?php endif; ?>
<div class="entry clearfix">
<?php /* Post title */ ?>
<h2>" rel="bookmark" title="<?php printf(__('Permanent Link to %s','graphene'), get_the_title()); ?>"><?php if (get_the_title() == '') {_e('(No title)','graphene');} else {the_title();} ?></h2>
<?php /* Post meta */ ?>
<div class="post-meta clearfix">
<?php /* Post category is not shown if this is a Page post */ ?>
<?php if (!is_page()) : ?>
- <?php the_category(",
\n
- ") ?>
<?php endif; ?>
<p class="post-author">
<?php
if (!is_page()) {
/* translators: %s refers to the author name */
printf(__('by %s','graphene'), ' '.get_the_author_link());
}
edit_post_link(__('Edit post','graphene'), ' (', ')');
?>
</p>
</div>
<?php /* Post content */ ?>
<div class="entry-content clearfix">
<?php if (!is_search() && !is_archive()) : ?>
<?php the_content(__('Read the rest of this entry »','graphene')); ?>
<?php else : ?>
<?php the_excerpt(); ?>
<?php endif; ?>
<?php wp_link_pages(array('before' => __('<p>Pages: ','graphene'), 'after' => '</p>', 'next_or_number' => 'number')); ?>
</div>
<?php /* Post footer */ ?>
<div class="entry-footer clearfix">
<?php /* Display the post's tags, if there is any */ ?>
<p class="post-tags"><?php if (has_tag()) {_e('Tags: ','graphene'); the_tags('', ', ', '');} else {_e('Collaborative
Spark');} ?></p>
<?php
/**
* Display AddThis social sharing button if single post page, comments popup link otherwise.
* See the graphene_addthis() function in functions.php
*/
?>
<?php if (is_single() || is_page()) : ?>
<?php graphene_addthis(); ?>
<?php else : ?>
<p class="comment-link"><?php comments_popup_link(__('Leave comment','graphene'), __('1 comment','graphene'), _n("% comment","% comments", get_comments_number(),'graphene')); ?></p>
<?php endif; ?>
</div>
</div>
</div>
<?php
/**
* Display Adsense advertising for single post pages
* See graphene_adsense() function in functions.php
*/
?>
<?php if (is_single() || is_page()) {graphene_adsense();} ?>
<?php /* Get the comments template for single post pages */ ?>
<?php if (is_single() || is_page()) {comments_template();} ?>
<?php endwhile; ?>
<?php /* Display posts navigation if this is not a single post page */ ?>
<?php if (!is_single()) : ?>
<div class="post-nav clearfix">
<p id="previous"><?php next_posts_link(__('Older posts «','graphene')) ?></p>
<p id="next-post"><?php previous_posts_link(__('» Newer posts','graphene')) ?></p>
</div>
<?php endif; ?>
<?php /* If there is no post, display message and search form */ ?>
<?php else : ?>
<div class="post">
<h2><?php _e('Not found','graphene'); ?></h2>
<div class="entry-content">
<p>
<?php
if (!is_search())
_e("Sorry, but you are looking for something that isn't here. Wanna try a search?","graphene");
else
_e("Sorry, but no results were found for that keyword. Wanna try an alternative keyword search?","graphene");
?>
</p>
<?php get_search_form(); ?>
</div>
</div>
<?php endif; ?>