A while ago (when the achievement rewards were introduced) I already reported this but i haven’t got any answer yet.
The day i got my 1.000 reward chest + the zenith skin something went wrong, since I never recieved the chest. My bags were full at the time, so I made some room but then the “Take All” box dissapeared. Maybe it auto-opened or sth, but i didnt get anything from it.
I did get the skin tho..