I think I've seen this feature on other forum software (Discourse maybe) and definitely on Stack Exchange. You basically are not allowed to tag a topic unless the tag already exists.
@yariplus Thanks !
Are they the owners of their groups (identified by star next to their name in group members list in Persona)? Because even if they're not moderators I believe group owners are able to add people to their group.
managed to fix it by putting the ip address in the facebook url.. not the same one that is in config.json
@BuZz 1 is the correct answer,as the number of replies includes the first post in the topic which isn't technically a reply, which I think adds to the confusion.
Also with the reversed logic from the 2 settings before (which are how many seconds someone is allowed to do something, rather than how many until they are disallowed)
@PitaJ OK thanks, I will have to try and do that tomorrow.