I have visited your website. As you asked to hide the page titles that’s why I provided the CSS code that hides the page titles. Unfortunately, you could not hide the page title for specific pages by keeping it for some pages using Custom CSS.
You can try to disable page titles from the edit page title options.
2) Unfortunately, I am unable to see the screenshots you attached. Please make sure that you attached the screenshots to check it myself and help you out accordingly.
1) As I mentioned in my previous reply you could not just hide the page title from theme settings. You need to use CSS to hide it. But you want to display the titles of categories. Unfortunately, you cannot hide it for the shop page and display for the categories pages. Because the Shop page acts as the categories pages. It requires customization and this is beyond our limitations and support policy.
2) To change the background of the categories you need to Go to Products >> Categories >> Edit Categories >> Image for Categories title.
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