There are two ways on how to add a twitter timeline to your page.
You need to create your own widget. Login to your twitter account and create a widget then copy the code. Find out how to create a widget here.
First option - go to pages > add new > name your page (ex. Twitter). Select "Text" in the text editor and paste the embed code.
On the right under Page Attributes select "Twitter" in the Template field the click Publish button to save your changes.
Second option - Go to pages > add new > name your page then choose "Twitter" in the template field under page attribute then publish.
Next go to Social mobi hotsites (paintbrush icon)> settings > scroll down to "Social Feeds Settings" and add your twitter username and the widget ID you have created then click Save settings button below the section.