Challenges Bugged

EA App -  PC player - (Black_Solaris). 

Assault challenge to get 50 kills within 10m seems to be bugged, many kills not counting first off, secondly i finished one match and went from 17 to 21 in progress, then after the following match i showed no new progress and the bar was showing 17 again. I restarted the game and it shows 17 still. 

I'm rank 20 already and have played the last two days, no way I'm not at least 30+ on this progress. 

Please address if possible thank you! (GAME ROCKS BTW!)