If the button is displayed but is not working, check your Peertube logs.It could be because the remote service does not use standard scopes or attribute names.
For more information on this feature, check the documentation for [channel's terms & conditions](/peertube-plugin-livechat/documentation/user/streamers/terms).
Following settings concern the advanced channel options: users will be able to add some customization on their channels, activate the moderation bot, ...