JFBCinvite plugin

What plugin are you asking for? I'm a little confused by what you want. We have the JFBCInvite module..?

Are you looking for a {JFBCInvite} tag? We don't have that yet, but it's something we're planning to have in an upcoming release. There's a lot of changes and updates that are planned for the Invite module and we'll be rolling these out over the next month or so.