Same for me! Both pairs of Metas are now inoperative because I can't get them back to factory reset. Once you pull that little blue tab out of them when they're new, it's GAME OVER.

Dang, really? Why would that be? I mean, I believe you, I'm just shocked. I'm glad I read this, as I was thinking of getting some but not now.

There is a factory reset procedure, I think you hold the shutter button while switching them off and on again.

I’ve had excellent luck with their warranty process.