Just came here to vent my frustration

I have consigned many items with FP over the past few years (probably 20ish items). This is the first time I have something being returned to me. And IT'S AN ITEM I BOUGHT FROM THEM about two years ago! The quote they gave me was fantastic, which is why I suppose they are now sending the item back to me (at least that's what I hope). It's a pair of VCA earrings which are now discontinued, but their buyout I thought was even high. I got a very vague email today saying that they found "some inconsistencies with the engravings." I don't even know what that means!
They are paying for the return shipping, thankfully. But my bigger concern is that they sold me earrings which they are now suggesting are fakes. I am not sure if I am reading too much into this or not. Has anyone gotten a similar message? I'm hoping it's just that they realized their buyout was too high and want a way out of it. I replied to the email I got asking for more information but haven't received a response yet.