WordPress not showing full text

Index.php

<div class="post-content">
<?php the_content(); ?>
</div>

I purchased a theme from Template Monster (that’s where I went wrong) and it has the option to disable or enable showing of excerpts. When I disable this feature, it doesn’t show anything on the homepage. Above is my index file, where the post-content class is where the post would normally show. I swapped out get_the_excerpt for the_content and it remains an excerpt.

Also, in my WordPress Settings -> Reading -> ‘For each article in a feed, show’ I have ‘full text’ enabled, but that does absolutely nothing.

Any idea how I can fix this?