Why can not I delete the folder "files", "html" and "log" in the root directory

The folder structure of your "root" directory is defined by easyname and can not be changed.

The directory log is needed for the web statistics generation and the generation of the error messages of your applications.

Content/web pages can be published in the html folder.

The directory files can be used to save your own scripts, logs etc. which should be not accessible through the internet.