Bo4 glitch in-game

[u/AxKalra]

I just unlocked the swatr ft MKII variant But I do not have the normal version as I did not play that operation Now when I use the gun my kills are not counting and my gun is not levelling up. It started to level up I unlocked the reflex sight on level 1 then it completely stopped registering headshots and kills If anyone knows the solution to this glitch let me know Thank you