I think you might want to email them, they’re usually pretty responsive and understanding. I mean, I know they’ve done nice things for me in the past (because I’m unlucky that way like you), so I can’t see why they wouldn’t for very recent buyers.
Also I think there’s no worry to have about Push 3 making Push 2 deprecated, they kept updating Push 1 for a while as well despite quite major design differences between both units, so I can’t imagine they’ll change that approach for Push 3 (which, sincerely, I still think is around the corner even though they don’t talk about it).