Theme Options > WooCommerce > Cart page > Empty cart content > edit content of Text tab.
You can upload screenshots into your Media library on-site and provide URL via the private content area.
Have you read this article – https://xstore.helpscoutdocs.com/article/30-base-theme-translation ? Provide temporary wp-admin access, so we can check translations in Loco translate on your site.
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.