Player went missing

Update, it happened again today. I packed another extinct silver card. I listed the card and went off the game. I come back on see my transfer list and the card has vanished into thin air. Didn’t receive coins if it did sell. It’s not in my discard storage ( I didn’t discard it ) what is going on? This has only been happening since the latest update. No doubt the issue will be ignored until a big content creator deals with the same issue.

I’ve had loads of players go missing. And had the same response.