No codes are appearing on my site

Hi. Each time i place an add code in my site in the html tab, not the visual, the adds do not show unless I am logged in. When I am not, the whole page is blank and the only thing it says is “comments are closed”. How do I change this and make them seen no matter if i am logged in or out? This has never happened before. I would always place adds on my site and I could’ve always seen it weather or not I am logged in. And, can other people see it like I do? As in, do they also see ‘comments are closed’ and only see all the ads when they have an account and are logged in?
Please reply,
Thanks,
Vivee