I'm not sure what I'm doing wrong, but I don't see that plugin in the search results. I searched by the plugin author's name (Mass Edge) and there are zero results.
I found out that my website was running an older version of PHP, so maybe the plugin library search didn't return this plugin for that reason. Not sure. But I did a Google search for the plugin. Found it, downloaded it, then uploaded it. It worked! Yay! Almost 500 files, so it was worth the headache with my website host. Thank you!