I'd say to give it another go. There's a wide range of demographics in the beta, so it could've just been sent at the wrong time! Invites come in waves, usually

I'd say to give it another go. There's a wide range of demographics in the beta, so it could've just been sent at the wrong time! Invites come in waves, usually at the release of a new version, so it could be a month or so before you get a reply.