Road to Rank – Pistol Knockdowns not counting

For the past few days, the “Road to Rank” challenge Get 3 Knockdowns with a Pistol has not been progressing at all.
I have tried using only the RE-45, Wingman, and Mozambique in multiple matches (BR Trios), achieving several knockdowns each time, but the progress always stays at 0.

Other challenges are updating normally, so this issue seems to be affecting only this specific pistol knockdown challenge.

Please check and fix this issue.

Platform: PC