I would also like to know as to why i didnt get a chest. I was disconnected before the boss died like many others, its possible they are like “well you never actually killed the boss so are therefore not eligible”
Well i would of killed the boss if i didnt disconnect. If i knew i had to take a screenshot i would of (even though people with screenshots seem to be in the same boat)
Edit: Just seen the above post from Gaile,
thank you for investigating the issue further and not just leaving it as is.