Simple Search Plugin not showing results

Hi,

I am trying to get the simple search plugin working.
I have integrated the search bar in my theme and applied the following config to /user/config/plugins/simplesearch.yaml:

enabled: true
built_in_css: true
display_button: true
min_query_length: 3
route: /search
search_content: rendered
template: simplesearch_results
ignore_accented_characters: false
order:
    by: date
    dir: desc

Unfortunately when I search grav routes to http://myserver/search/query:Factoring I get no results (the results page is properly routed).

I guess I am missing something in my config or I have missed other stuff. Any tip/suggestion is welcomed.

Thanks,