Promblem with server could not prove that it is jai-news.com;

I just buy hosting and start to install wordpress but it show like this, I cannot access my website and my other friends as well.  It show like this:

This server could not prove that it is jai-news.com; its security certificate is not trusted by your computer's operating system. This may be caused by a misconfiguration or an attacker intercepting your connection.

NET::ERR_CERT_AUTHORITY_INVALID
Anyone can help me ?