Hi!
Thank you very much for the details!
I tried on the linked page, typed in “test” and I am seeing the results: https://i.imgur.com/okGpkMX.png
The results shortcode of the plugin is to place the live search results somewhere else on the same page, but not to replace the default theme results – that is fully controlled by the theme you are using.
If you want to have the search settings visible by default, you can set it here: https://i.imgur.com/CBFnmhU.png
