The following will be recognized as the default page for any directory within your site:
index.html, index.htm, index.php & index.shtml
If you still see the Cloud Sites default page (Your website is ready…), then you will need to delete or rename the file index.html in your public directory to something else (e.g. index2.html). Any file named “index.html” always takes priority over index.htm, index.php, etc. and will always serve even if you have other index files in the same directory.
NOTE: If a default page has been removed from a directory, then a 403 error page will be given. This error happens because for security reasons, directory listing is disabled by default. After you upload a default index page to the problem directory, this warning will be corrected.