Showcase Directory pluginexample no longer live - (vibrational energy network?

At first glance, this Directory plugin seemed promising, but I am still struggling with it.

Is there a reason why there cannot be a directory plugin that is NOT integrated with one theme? In general, Wordpress plugins and themes are separate, right?

Also, version 2 just came out, and there is only one advertising widget area available above the middle of the page?

I see that the directory plugin is not listed as a money making plugin; and I cannot see any showcase examples of a directory.

Someone, please tell me that I am wrong about this plugin. Thanks

https://premium.wpmudev.org/showcase/vibrational-energy-network/