It doesn't count as battle done if you do not have 7* TG or you bought a pass.
Ideas
EA_Gunner
EA QV Team
EA QV TeamStatus changed:
Confirmed
to Resolved
For updates, review ticket in https://trello.com/c/1UO9zIIh/1819-gc-several-players-cannot-complete-the-feat-complete-the-battle-for-unknown-reason