This article explains how to replace the native search bar in the Ekommart theme by Opal_WP.
FiboSearch plugin has built-in integration with the Ekommart theme (since version v1.7.2). It means you can replace the default search bar by selecting a single checkbox.
If you have activated Ekommart theme or child-theme of Ekommart, you should see the following screen in the plugin settings:
WooCommerce -> FiboSearch -> Starting (tab)
Select the option “Replace all Ekommart search bars with the FiboSearch.” and the search bar should be replaced.
This integration also works form mobile version.