Why Sometimes this type of page appear on my Subdomain?

[KangJL]

Since you did not write clearly, this is the best answer

When will my domain name start working

If you’ve just created your account, or just added a new domain name to an account, you may be surprised that you are unable to view your website when using the domain. Instead you may see: An advertisements page, with ?z being added to the URL. An error saying “This site can’t be reached”. This is usually caused by a system called DNS Caching. This article explains how DNS Caching works, why your website isn’t up yet and what you can do to see your website right now. When will I be able to …