Hello,
To add banners to the Shop page you need go to Theme Options > Shop > Product Page Banner. On our demo it’s added via static block shortcode https://www.8theme.com/demo/docs/legenda/index.html#!/static_blocks and VC editor (Single Image element).
Sorry, but there is no such possibility to remove breadcrumbs only on Home page.
Footer can be removed in Appearance > Widgets > Footer Links widget area. Just drag an empty text widget into there and save.
Please provide us with wp-admin panel credentials in Private Content to check the issue with Featured products slider.
Thank you.
Regards,
Eva Kemp.