I entered your Twitter app credentials into our development site which has the TweetScroll working.
It works, see the linked screenshot https://www.dropbox.com/s/otzy6fv3twnkr0e/2017-03-20.png?dl=0
I believe there is still an issue with your installation of WordPress.
I see that the old child theme has not been successfully deleted and when I log into your admin dashboard I get an error message. See below.
Warning: An unexpected error occurred. Something may be wrong with WordPress.org or this server’s configuration. If you continue to have problems, please try the support forums. (WordPress could not establish a secure connection to WordPress.org. Please contact your server administrator.) in /home/sling247/public_html/wp-includes/update.php on line 500
I think there is an issue with your installation of WordPress.
I also noticed your site is very slow, it could be that the TweetScroll script is timing out.
I would suggest doing a backup and updating your copy of WordPress. You can also update your version of Integral Pro to the latest version, which is 1.3.2.