Global Search Plugin on multisite returning no results


So I purchased the global search plugin and not sure if it's working as it should.

I see a search box on the page, the plugin created a 'site search' page.

When searching, it returns no results (no errors either). I have tried adding post indexer and some terms to search i.e. site title in the global settings.

I am interested in returning a set of results which shows a list of the sub-folder sites which can be selected and viewed.

Have I done something wrong here and does it support the required functionality?