you will only recieve gift boxes per 100 olives you spent not ebb/ecv coupon... and im sure i haven't recieve ebb/ecv coupon for the 4boxes today but i checked recently i have 1 lol so i exchange it to something before they'll get it back lols
and the count of my boxes is not correct too lol, i only got 3 when the event started and 4 boxes after that day till now which make it 35 and i recieved 36 haven't spent olives or anything