2) Because banner is added for the shop page only (Theme Options > WooCommerce > Shop > Shop page layout > banner content https://prnt.sc/E0TnZxaZp58W). If you want to show that for the category go to Products > Categories > edit the category and add the Static block shortcode to the product description https://prnt.sc/2leN9alfxV-2 Then it will appear for this category. You can use different banners for different categories.
4) I don’t see the mentioned issue https://gyazo.com/4af9c57a670cb6adcbb369e4fa094261
Could you, please, provide us with the video of the problem for a better understanding?
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