Hello,

Thank you very much for choosing our theme and for contacting us.

1. You can enable and configure in the Theme Settings > Shop > Header banner.

2. User is the Woocommerce functionality our theme does not influence or have option to change.

3. You can drag and drop the row which contains the slider in any place of your page https://gyazo.com/533c5a618f067783604bb29295dea33f

4. You can remove the content and add yours or disable the popup in the Theme Settings > Shop > Promo popup.
Best Regards