PHP Code Breaks Site

I just finished a site where I used the “Insert PHP Code Snippet” plugin in conjunction with the Elegant Themes Theme “Divi” and Advanced Custom Fields. It worked perfectly. So, I decided to use it again under the same theme/ACF plugin scenario. But for some reason this plugin is breaking the site on the front end AND the backend when I put a PHP shortcode into my page.

Shortcode is called “[xyz-ips snippet=”phpHomeServices”]” and here is the code entered into the PHP plugin:

if( have_rows('services_leftcolumn') ): ?>
<ul>
	<?php while ( have_rows('services_leftcolumn') ) : the_row();?>
	<li><a href="<?php echo the_sub_field('service_page_link_lc'); ?>"><?php echo the_sub_field('service_name_lc'); ?></a></li>
	<?php endwhile; ?>
</ul>
<?php endif;?>

<?php if( have_rows('services_rightcolumn') ): ?>
<ul>
    <?php while ( have_rows('services_rightcolumn') ) : the_row();?>
	<li><a href="<?php echo the_sub_field('service_page_link_rc'); ?>"><?php echo the_sub_field('service_name_rc'); ?></a></li>
    <?php endwhile; ?>
</ul>
<?php endif;

Even if I change the PHP code to just echo "Hello"; it breaks.

Front End (links should be in the blue box):
https://goo.gl/aX8n2q

Back End:
https://goo.gl/ZMx8eW

https://www.ads-software.com/plugins/insert-php-code-snippet/