Hey hon, it might be faster for you to request an invite through the site. It looks like they've suspended existing user invites while they try to work through the backlog of the site request queue. Maybe request one and then you can have the invite I get if it comes first. :D

Until recently, we were releasing some invitations to existing users who requested them. However, we've taken the decision to suspend issuing invitations this way for the present, to enable us to better monitor site usage. We know that this will be a disappointment to many users who want to be able to invite friends to the site, but we feel that the fairest and most manageable way to manage account creation at present is via the queue alone.