You might need to uninstall/remove and try again.
Here's an old EA forum posting with the steps laid out, it's written for BF3 but its essentially the same for BF4.
https://forums.ea.com/discussions/battlefield-franchise-discussion-en/faqupdating-punkbuster/5932561
Whenever I have PB problems...
Who are you reporting? crosseyed1974
Date of incident Dec 16, 2024
Which server were you on? BZ1
Describe the incident Politics.
This knob won't shut it.
Who are you reporting? wabbit101
Date of incident Dec 1, 2024
Which server were you on? BZ1
Describe the incident Griefing.
Guy was hanging out in spawn with a tank barking orders at ppl not intending to do anything with the vehicle.
Who are you reporting? ImperialJapan02
Date of incident Oct 2, 2024
Which server were you on? BZ1
Describe the incident Guy was spawning in helicopters to kill the drivers multiple times. Then when players tried to report him the fuzzy search didn't pick up the name for some reason.