There are a few possible answers

1. The default page is stuck in a cache and you aren't seeing the new content yet. Try refreshing your browser a few times. If that doesn't update the page, call it specifically by typing http://www.yourdomain.com.au/index.html.

2. The EMW page is called index.html. If your uploaded homepage is called index.php you need to delete the index.html page.

3. Check you have uploaded your files to the correct directory. The main website is at the /public_html directory