Interesting. I'd love to see where you're seeing that. I'll go poke at the site a little more.
Edit: When I try to do a domain search I get told:
> Domain search restricted: You don't have an active subscription so you're limited to searching domains with up to 10 breached addresses (excluding addresses in spam lists).
My domain has 11 breached addresses.
I log in. Click on Business -> Domains. Then click on the looking glass under "Actions" on my domain. I can there see all my addresses an Pwned Sites.
But I think you are right, because I only have 3 breached addresses under my domain (I do see the 10 addresses wording under subscriptions)
Yep, if you have the good fortune of having many breaches while using companname@example.org, the service requires that either you pay up or you have to guess and check.
I understand, but it's frustrating.