I've been trying to complete a early mission been playing less than a week. Need to equip 3 atk champions with gauntlets chest piece and boots with attack % as primary stat...already done this a dozen times but stays at 2/3..using Samsung Jay 2 Pure..android version 8.1.0 and game is up to date..been stuck on this for days and I'm new to the game please help..also have a challenge that's identical and neither are working