You should be able to password protect a page using the standard WordPress options within the page at the top right.
Before publishing the page go to Visibility > Password protect > Publish
But if you want to take things one-step further, I recommend using a plugin like s2member.
Hope this helps.
Do you mean you have loaded up the demo content to your site and it is blank?
If so, edit your home page and check the galleries on it. If a datasource or slide set is not selected, the page will not show.
If you are still having issues, please set your reply to private and provide your URL/login details so I can take a further look for you.
You must be logged in to reply to this topic.