Two different challenges not tracking!!!

I’m really annoyed at this point. ASSAULT and ENGINEER class challenges stopped tracking for me. So the one where you have to do damage with grenades stopped tracking and engineer 1 stopped as well, no matter how much I repair vehicles can’t get that one up either. Amazing, I payed 70 dollars for this to play as tampax armatta. I’ve been defending the game because I’ve been having fun but this is going to make me rage out.