This article explains how to replace the native search bar in the Top Store and Top Store Pro themes by ThemeHunk.
FiboSearch plugin features built-in integration with this theme. It means you can replace the default search bars by selecting a single checkbox.
If you have activated the Top Store or Top Store Pro theme or the child theme of those themes, you should see the following screen in the plugin settings:
Select the option
Replace all Top Store or Top Store Pro search bars with FiboSearch and the search bar should be replaced.