1. Page Breadcrumb Background Image
In WordPress Dashboard go to Appearance submenu and click on Customize.
After clicking on customize you will in theme Customizer.
Here you have to click on Page Breadcrumb than Background
Here you will change Page Breadcrumb Background Image
Go to Customize -> Page Breadcrumb -> Background
2. Hide/Show Page Breadcrumb
In WordPress Dashboard go to Appearance submenu and click on Customize.
After clicking on customize you will in theme Customizer.
Here you have to click on Page Breadcrumb than
In Setting you can hide and show the Page Breadcrumb by clicking on hide/show button.
Go to Customize -> Page Breadcrumb -> Setting -> Breadcrumb Hide/Show
You have to use Breadcrumb Image Size 1920Px X 300Px