Disappearing golden keys

So I was playing with a friend earlier today and we just beat the game together on our co-op specific profiles. Afterwards, I decided to use a key but sadly and weirdly when I went to do it I had “0” keys and I don’t know why. I have entered every shift code up to this point and redeemed every single key so far (about an average of 130 keys) and just all of them went “poof”. Can someone tell me how to get them back or are they gone forever? Has this happened to anyone else? How is this happening? It was perfectly fine in Borderlands 2. Honestly I kind of feel cheated and discouraged to play this game again.

I’ve had this happen to me too. I’ve lost 60 or 70 myself.