Can't display fields on index.php

I’m trying to display 2 fields on the blog page of a site I’m developing, but they don’t seem to post. This is what my code looks like:

<?php if (get_field('blog_description')) { ?>
                <h2><?php the_field('blog_heading') ?></h2>
            <?php } ?>

			<?php if (get_field('blog_description')) { ?>
                <div id="blogMainDescription">
                    <?php the_field('blog_description') ?>
                </div>
            <?php } ?>

I’ve used the same code on other template files for other pages, and they work fine, but I can’t seem to get it working on the index.php file. Is there a specific way to post on the index.php file?

For an example, see the following pages:

Working page (same code, different field names): https://prodynamo.ca/wordpress/services/

Non working page (triple checked field names): https://prodynamo.ca/wordpress/blog/

Thanks in advance

Cory

https://www.ads-software.com/extend/plugins/advanced-custom-fields/