Support Challenge Bugged

The support challenge with the HE airburst launcher is completely bugged. I have killed almost 20 people with it, but my damage stays at a static 62.

Also, how do you realistically expect anyone to get 75 revives in a single match? It is literally impossible. Some of the challenges you've created are almost absurd. If they aren't absurd, they are bugged half the time. Half of the aircraft kills I get don't even register with my challenge. That almost applies to any challenge I undertake.