Hi markoyston ,
Welcome to the community!
We currently don't have an option to change the Messenger Chat Widget.
You'll have to add a script on your site that will overwrite the script that we are using.
You can change the language of the Messenger Chat Widget by pasting this code after the <body> tag:
<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
FB.init({
xfbml : true,
version : 'v4.0'
});
};
(function(d, s, id) {
var js, fjs = d.getElementsByTagName(s)[0];
if (d.getElementById(id)) return;
js = d.createElement(s); js.id = id;
js.src = 'https://connect.facebook.net/es_ES/sdk/xfbml.customerchat.js';
fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));</script>
I recommend using the plugin Header, Footer and Post injections to paste the code.
This script will change the language into spanish.
Let me know what language you want to change the Chat Widget to. I'll look up the language code that goes with it and replace this with that. 🙂