Well, just thought I should update this to say I didn't get the job, unfortunately. As such I probably won't be able to provide answers to any further questions, unless it's something I already know, as I'm no longer in regular contact with the team at Trybal.
I still think it's a great app. and will continue to use/promote it as it's done nothing but get me free stuff for very little effort.
If there's anyway out there who is interested but hasn't yet downloaded and used my referral code (bigblue) it's be great if you did so tonight as I would apparently move to the top reward level if I get just 3 more referrals tonight (apparently these sign-ups are guaranteed an immediate prize upon signing up, too). Whatcha waitin' for?!!