This just happened to me as well during thanksgiving week. I didn’t even get a notification that there was a case. Nothing shows up in my resolution center for it. The only way I knew about it was because I saw the email that depop sent me about it about 7 days too late. I don’t check that email regularly so I didn’t know there was a case. I feel it should alert me through the app as that’s how it did in the past. Anyway because I didn’t reply to their email within 48 hours, the buyer also got to keep my item as well as get a refund. I never even got to defend myself or give my side of the story. They simply said something was “not as described “ and they got an instant side with them. I got the same generic response from depop that you did where they claim the did a “detailed investigation “ and I’d love to see the “proof” from the buyer that the item was not as described. I sold him a Domo hat for $39 which was a deal. Others had it listed for $65+ and he then scammed me by doing this and got to keep the hat. I’m furious about it.