Our reports show issues that affect any page up to and including your root domain. If your root domain were example.com, the report would include experiences under example.com, news.example.com, example.com/finance, and so on.
When you submit your site for review, owners and users (as defined in Search Console) of the root domain and all subdomains are emailed that you have done so, and an obfuscated version of your email address is displayed in your report change log with a status of "Review pending."
Before submitting for review, ensure experiences under all subdomains are also ready to be reviewed. For example, if you work for a news website and your subdomain is the Sports section, ensure any issues you fix have also been fixed on all other subdomains (Finance, Entertainment, etc.) before you submit the issue for review.