After updating the template to version 6.0.3, the search icon in the header of the site disappeared.
When you hover the mouse over the place where the search icon should be, a hint will pop up that this is a search. But when you click on this place, nothing happens.
Please provide your site admin access to the private area.
Please make the full backup or the site and confirm the permit for us to deactivate the plugins not related to the theme and switch to the parent theme for the while of checking what may take up to 15 minutes.