Hello,
Check your site now. We have imported Theme Options of the Marseille03 version. We created child theme with the required name. We don’t rename the parent theme because you won’t be able to auto-update the theme in the future, so it would better to keep the default parent theme name.
Use White label plugin to change the preview images and title for parent theme etc https://xstore.helpscoutdocs.com/article/108-white-label-branding-plugin
Regards