You google your website or domain name and you see the following:
no information is available for this page
Check you robots.txt file. You might have disallowed google and other search engines from accessing and scanning your website.
User-agent: *
Disallow: /
This means that no user agent (not google, not other ones) can access anything on the website.
But it should be for example like this:
User-agent: *
Allow: /
It will take a while before google indexes your website again.