Hi mvparena,
you can try to edit library/Twitch/twitch.php, function authenticated_user(), add ‘Accept: application/vnd.twitchtv.v5+json’ header, so it should look like this:
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
‘Accept: application/vnd.twitchtv.v5+json’,
‘Authorization: OAuth ‘ . $access_token
));
Best Regards