the mission cant be finished

it happened more than one time for example : one of the missions was temple ruins 4 win i won like 6 times the max number of players was 16 and the room was almost full and it says that i won 0 times at this map !!, i tried another mission at the same day and it was Colombia same thing i won like 4 or 5 times and it says 0 wins please try to fix that its really confusing me and not only me allot of other people