There’s a bug with the three Rune Caches you receive from the midwinter ward totem. I couldnt open them until a certain mission was completed in the expansion. I thought I must’ve finished it because the game finally let me open them. Except when I opened them nothing dropped. Nothing went into my inventory or my stash. Probably nothing you can do about it but I wanted to, at the very least, report it as a bug. I did some research and I actually hadnt finished the mission required to open them so I’m not sure why it had suddenly let me open them. I opened it with a Sorcerer.