Challenges wont progress properly.

Season 1 week 1 challenge repair vehicles for 1500 health doesn't register my repairs for half my games. I can tell when its not working because while I'm repairing I receive no points/health on screen for my repairs 

The class challenge for engineer where you have to get damage with anti air launchers hasn't registered a single hit or kill ive made on choppers or jets with my stingers. I killed like 3 today and no damage registered. If this doesnt get fixed im blocked from important gadget unlocks aswell as cosmetics please fix thanks!