The one stated in the subject. Live Chat Plugin for WordPress. Here is the url for their support:
https://wordpress.org/support/plugin/facebook-messenger-customer-chat/
You’ll note that there are messages piling up there for weeks with no replies.
OK, yeah. Authors/developers are not required to provide support. If you need support for it, probably time to find another plugin.
The author is “meta”, so you could take that up with Facebook. (OK, yes, that was meant sarcastically.)
