WhiteHousePro Twitter Feed

[mwhit 0]

Hello, 

I am having trouble with the White House Pro theme's twitter feed as I am receiving the "No Public twitter messages" error in the footer, even though the twitter account is public. I have followed this thread but I do seem to have the "correct" twitter api url:

 

The api url I have in twitter.php is: 

http://api.twitter.com/1/statuses/user_timeline/'.$username.'.rss

Hoping to get some support if possible!

Thank you