Hello,
Thank you for your message.
Please note that importing demo content does not create an identical copy of our demo site. Our demo contains a large number of pages, images, and media assets that are not included in the theme package. Importing all of them would take a long time and significantly increase site size.
That is why the demo import usually creates only the core pages and additional content from the live demo is not included.
Regarding Shop Custom Layouts:
This demo is not using custom layouts from the Layouts section, You can manage the shop page layout directly in:
Theme Settings > Shop
or Theme Settings > Product Archive
From there you can control the shop design and layout.
If you want to use a layout for the shop page, you can also create your own custom layout using predefined layout options.
Please follow this guide and create a custom layout for the checkout page: https://xtemos.com/docs-topic/checkout-page-builder/
Best Regards,