The VA invite tool allows you to mass-invite users to your facebook fan page. Here are some of the details related to its scope and some limitations
1. It sends the invites from your personal profile to the user you invited to invite your fan page. You cannot invite 'as' the fan page as Facebook does not support it
2. It sends the invites only when you're activated as your personal profile and not as the fan page. To know if you're logged as yourself or your fan page, look at the top right corner of facebook and see if it shows your personal profile name. If it shows your company name or if the URL says business.facebook.com, it means you're in Business Manager. Here's an example of business manager. Notice the red parts on the screenshots.
3. VA Invite tool works only for the following languages: English, French, Spanish. If you're on a different language, please switch to one of these.