Problem with the challenge "Deal damage witch Granade Launche"

Among the weekly challenges there is "Deal damage witch Granade Launcher" I did it both on vehicles and on live targets and scored 931, but after that the progress does not increase regardless of the mode (although it is suitable for everyone) and what the target is, the progress does not move and I cannot complete it (there are no rerolls to replace it). In the video, I show my progress (it's third among the tracked ones) before and after destroying a vehicle.