1)We excluded real images / products from demo content and replaced them by placeholders because many of our clients had the problems with demo content import because of the large size of import file and server settings. With placeholders, it takes seconds to import demo content, with images – minutes or some of users, who had limits in server setting, get the error. As a rule, our customers have their own images and there is no any problem to replace placeholders by real images.
We’ve sent .csv file with products from the default demo version to your registration email. You can use it to import products on the site, go to Products > Import. Before the import, set desired settings for product images in Appearance > Customize > WooCommerce > Product Images – http://prntscr.com/no96eh