I just spoke with customer support, who confidently told me that in order for my website not to be visible while I work it, I need to use my temp domain name. So, I switched to the temp domain name.
PROBLEM: I can type in the domain name (the one that will be permanent) and the site still comes up!! How am I supposed to privately work on my site without it being visible to the web public? So frustrated!!!! What am I doing wrong???