Disable Flags
A disabled flag is a flag that cannot be modified by normal players and server operators.
Go to flags.yml, you will see a key called disabled-flags. It holds an array of flag names that are disabled.
If you added a flag to the disabled flags list, but some players already changed the state before disabling it, apply the change using: /hsadmin flagsoverride [global/world/member] {player} [flag] [state]