Hi,
Give the FPNA user role as an administrator in the System module.
With the FPNA user already having admin roles for all the modules, I just re-imported the Admin role from scratch (redoing a few customizations), set all the exact same permissions back, and that did the trick. I guess something just got currupted at one point.
If this happens again the “one user role can edit which role”is in in the grantable role self associations[govened by the manage “ALL” users or selected roles part] and might be worth it to check in the DB if associations are in place