In the extension talk page, a user noticed that the Twitter widget stopped working a while ago:
I just want to make people aware that the twitter feed widget is not working anymore since September 10th. I have marked them as such in the list (crossed text through). They don't work anymore as twitter changed there method of how you can tab into your twitter feed and removed the old option to link to your twitter feed
Here is how mine works now, id is the Twitter user:
<includeonly><a class="twitter-timeline" href="https://twitter.com/<!--{$id}-->?ref_src=twsrc%5Etfw"></a>
<script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="https://platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs");</script></includeonly>Visible live at: