As per the general report on this forum post:
the Midwinter Ward treats are broken for Couch Co-Op. I got my own treats, but my wife didn’t. She’s been trying to get support from Blizzard, but has been unable to post on the forums with her account as she plays Couch Co-Op, and there’s only one D4 account on the Xbox. I believe her account flipped the flag of “recieved treats” when I collected mine (we were playing co-op at the moment), but she didn’t recieve the treats. My son, on his account playing solo on the same Xbox did get the treats, so it’s not an “own a copy on your own account issue” and more a “blanket flag setting but not blanket gift looting” issue.
Need help for her account, to fix this. Here’s the link for her support ticket, still open:
https://eu.battle.net/support/en/help/case/detail/97455804
Help!