Hello, @Martin,
The File generator option was created to speed up the site performance and avoid calling the styles of elements that you don’t use on your site. Use this tool if you are an advanced user ( it may cause style issues on the frontend )
Furthermore here is an article https://xstore.helpscoutdocs.com/article/100-how-to-speed-up-my-website
Sorry for the inconvenience, The file generator was removed. It will be removed from the WhiteLabel also.
Regards 8Themes Team.