That's not what you asked in the Free Hosting forum (and you didn't link to any previous postings). If you only want help getting the site builder to load, that is
a hosting issue, but only a very few people involved in support here have access to fix server problems, so it may be a while getting a response.
That said, my best piece of advice is to stay away from online site builders whenever you can. They sound like a good idea, but it can very very difficult to move your website from host to host when you need to, and they tend to use a lot of "magic" code that can be very difficult to edit or fix when things go wrong. There is a very good piece of free
software that can produce much better (and more portable) web pages — KompoZer
— which is as easy to use as a basic word processor. You can then either upload the files it creates using the cPanel file manager, or use the built-in FTP client (which will make sure that you put everything in the right place).