Hi! Sorry for the late reply, the team was in the middle of FSExpo preparations and your post slipped through unnoticed!
@srcooke is entirely correct about the reason. We have not been able to get ahold of this data despite several attempts to contact NZ authorities. Additionally, we do have a ticket in our issue tracker to remove these indicators if we do not have any data instead of, quite deceivingly, showing green “0kt” pills.