How do I get LibreJS to get its complaint email to work?

My understanding is that LibreJS would automatically find the contact info for a site and help you send a complaint email. When you look at the LibreJS extension's preferences, it contains a subject and body for an email.

But any time I click the complain tab it gives me some links to the contact info of a page, but that's it. Nothing is automatic. I can't get it's prewritten complaint email to "work."

Am I doing something wrong or is this functionality hard to pull off. Maybe it's something that will be better with fututure versions?