Can the plugin search only by SKU’s ?

Hi,

Yes, you can search only by SKU, but you need to do two things:

1. install the latest version that has not yet been officially released; you can download it here: https://downloads.www.ads-software.com/plugin/ajax-search-for-woocommerce.zip
2. apply this snippet:

   add_filter( 'dgwt/wcas/native/search_in', function ( $search_in ) {
   	return array( 'sku' );
   } );

   .
   However, there’s one catch – you can’t put it in a theme because it won’t work (theme is loading too late for this filter to work). You can apply it using the plugin https://www.ads-software.com/plugins/code-snippets/