Embed your twitter feed or the twitter timeline from your favorite users on your WordPress blog. Shortcodes and widgets are used.
You probably forgot to put your Twitter Widget ID in the shortcode or the widget. Check step 2. of the installation process.
The field "query" is NOT required. It is only to show themes or sentences like "#worldcup". The field "list" is NOT required too. It is to display the tweets of one of your list.