I'm in the middle of developing a multisite setup that uses

I'm in the middle of developing a multisite setup that uses the membership plugin. Each of the sites created from the multisite setup are to be invitation-only, and so I've installed the invite plugin. However, when the admin of a particular site sends an email invitation, the invitation only applies to the generic site. For instance, I have the site example.com. The multisites are example.com/site1 and example.com/site2. If the site2 admin sends an invitation email, the signup only takes them to register at example.com, not example.com/site2. Is there a way to get this to function the way I need it to work? Does the plugin even work properly with multisite in that way? Thanks