I’m not sure if others have encountered the same thing. I have at least close to 1 stack Unopened PvP reward chest before the April 15 patch. I wasnt able to log in for a month and when I came back last week I can’t open the chests and it disappeared when I entered the heart of the mists. Does it really work that way? If so, it seems a bit unfair and I think anet doesn’t announce anything about that. Its no joke to save those chests and it’s very frustrating that it will just turn into nothing. At least have same compensation for it.