File Integrity Monitoring not collecting data on DCs

I followed the instructions to setup file integrity reports on the domain controllers in the environment. I also manually added the audit permissions to one of the DC's Windows folders, to see if making modifications there causes any logs to populate, no luck so far.

Does the fact that the ' Object Access policy and audit permissions(SACLs) need to be configured to audit the configured servers.' error pops up every time I open the reports mean that it isn't actually configured correctly? Is there an easier way to start troubleshooting, the guide I found within ADAudit itself didn't lead me towards anything helpful.

Thanks