Thanks for the reply.
I did try those things, but they didn’t work. I found an alternate solution, though. I had to add this line of php to my footer.php file, right before the </body> tag: <?php wp_footer(); ?>
I was missing this and apparently it allows this plugin, and many other I had tried to use, to function properly. I’m not sure what my footer has to do with it all, but I’ll leave that to the experts.