Thank you for buying our theme. We hope it will meet all your expectations! 🙂
To change the header of a single page, you have to select the Minimal Template in the Page Attribute of your page.
To hide the title of the Shop page, click on Customize > WooCommerce > Product Catalog > General and uncheck the Display header image option.
Please find the attached screenshots.
Hope this will help you get what you are trying to achieve.