I am currently working on a news website and using the Wordpress archive feature to display all my posts in a feed (when you click on the post titles you are taken to the source website).I need to add another piece of metadata to these posts (the source of the news article).
.
This is what it currently looks like, I need the source inline with the date and author.
I have used the advanced custom fields plugin to create a custom meta box for each post in which I can input the source of the article. This seems to be working fine, but I can not figure out how to display this on the archive page. 
This is the code I added to the loop-archive.php because that's where I want the custom field to display. But nothing happened. I got this code from many different websites which make it seem easy to display your custom metadata. (did this all on a child theme, the theme I'm using is Newspaper)
How do I fix this?
archive.php:
<?php get_header();
$td_archive_title = '';
if (is_day()) {
$td_archive_title .= __('Daily Archives:', 'newspaper' ) . ' ' . get_the_date();
} elseif (is_month()) {
$td_archive_title .= __('Monthly Archives:', 'newspaper') . ' ' . get_the_date('F Y');
} elseif (is_year()) {
$td_archive_title .= __('Yearly Archives:', 'newspaper') . ' ' . get_the_date('Y');
} else {
$td_archive_title .= __('Archives', 'newspaper');
}
?>
<div class="td-main-content-wrap td-container-wrap">
<div class="td-container">
<div class="td-crumb-container">
<?php echo tagdiv_page_generator::get_breadcrumbs(array(
'template' => 'archive',
)); ?>
</div>
<div class="td-pb-row">
<div class="td-pb-span8 td-main-content">
<div class="td-ss-main-content">
<div class="td-page-header">
<h1 class="entry-title td-page-title">
<span><?php echo esc_html( $td_archive_title ) ?></span>
</h1>
</div>
<?php
get_template_part('loop-archive');
?>
</div>
</div>
<div class="td-pb-span4 td-main-sidebar">
<div class="td-ss-main-sidebar">
<?php dynamic_sidebar( 'td-default' ) ?>
</div>
</div>
</div>
</div>
</div>
<?php get_footer(); ?>
archive loop:
<?php
$post_count = 1;
$column_count = 1;
$span = 'span6';
$column_break = 2;
$is_404 = false;
if( is_404() ) {
$is_404 = true;
$column_break = 3;
$span = 'span4';
$args = array(
'post_type'=> 'post',
'showposts' => 6,
'ignore_sticky_posts' => true
);
query_posts($args);
}
if (have_posts()) {
while ( have_posts() ) : the_post();
if( $column_count == 1 ) { ?>
<div class="td-block-row">
<?php } ?>
<div class="td-block-<?php echo esc_attr( $span ) ?>">
<div <?php post_class('td_module_1 td_module_wrap clearfix') ?> >
<div class="td-module-image">
<div class="td-module-thumb">
<?php
if ( current_user_can('edit_published_posts') ) {
edit_post_link('Edit', '', '', '', 'td-admin-edit');
}
?>
<a href="<?php the_permalink() ?>" rel="bookmark" class="td-image-wrap" title="<?php the_title_attribute() ?>">
<?php
$post_thumbnail_url = '';
if( get_the_post_thumbnail_url(null, 'medium_large') != false ) {
$post_thumbnail_url = get_the_post_thumbnail_url(null, 'medium_large');
} else {
$post_thumbnail_url = get_template_directory_uri() . '/images/no-thumb/medium_large.png';
}
?>
<img class="entry-thumb" src="<?php echo esc_url($post_thumbnail_url) ?>" alt="<?php the_title() ?>" title="<?php echo esc_attr(strip_tags(the_title())) ?>" />
</a>
</div>
<?php
$categories = get_the_category();
if( !empty( $categories ) ) {
$cat_link = get_category_link($categories[0]->cat_ID);
$cat_name = $categories[0]->name; ?>
<a class="td-post-category" href="<?php echo esc_url($cat_link) ?>"><?php echo esc_html($cat_name) ?></a>
<?php } ?>
</div>
<?php
$source = get_post_meta($post->ID, 'source', true);
if ($source) { ?>
<p>Source: <? echo $source; ?></p>
<?php
} else {
// do nothing;
}
?>
<h3 class="entry-title td-module-title">
<a href="<?php the_permalink() ?>" rel="bookmark" title="<?php the_title_attribute() ?>">
<?php the_title() ?>
</a>
</h3>
<div class="td-module-meta-info">
<div class="td-post-author-name">
<a href="<?php echo esc_url(get_author_posts_url(get_the_author_meta( 'ID' ))) ?>"><?php the_author() ?></a>
<span> - </span>
</div>
<span class="td-post-date">
<time class="entry-date updated td-module-date" datetime="<?php echo esc_html(date(DATE_W3C, get_the_time('U'))) ?>" ><?php the_time(get_option('date_format')) ?></time>
</span>
<div class="td-module-comments">
<a href="<?php comments_link() ?>">
<?php comments_number('0','1','%') ?>
</a>
</div>
</div>
</div>
</div>
<?php
if( $column_count == $column_break || $post_count == $wp_query->post_count ) { ?>
</div> <?php
$column_count = 1;
} else {
$column_count++;
}
$post_count++;
endwhile;
if( !$is_404 ) {
tagdiv_page_generator::get_pagination();
}
} else { ?>
<div class="no-results td-pb-padding-side">
<h2><?php esc_html_e('No posts to display', 'newspaper') ?></h2>
</div>
<?php }
