I was messing around with BetterChatFilter and despite having the muting and kicking features turned off it doesn't appear to work and it muted myself and another player.

I've used unmute "player", but it didn't seem to work.

I'm thinking this information is stored in a file on the server somewhere?

Any help much appreciated.

I never found out where it was stored, but after disabling betterchatmute, I was able to use battlemetrics to unmute myself.

I wasn't able to do it via the console using unmutechat playername.

If using a plugin, the data would be stored under oxide/data, generally with the name of the plugin.

If using the native client muting in Rust, it'd be stored on your client.