After Asia server error at 2021/10/09 night. My cube is missing
Hope you didn’t have anything in it. And also hope you are able to go do the kill/quest again and get it to drop. Items that are gone appear to just be gone. Here is what blizzard told me. the first few days are like… wtf…
You can do the dungeon again and get a new cube. That is one thing that you can actually fix.