Update : Support is unresponsive. Reach out but haven't heard anything in weeks other than auto response acknowledging received my email. Still problem throwing grenades in heat of battle - ie when switching between weapons must tap grenade button several times before grenade is thrown. by then I've been killed. Also would REALLY like to know how to use Killstreaks during a battle. I receive a very quick notice that one of my selected Killstreaks is available but no clue how to use it.