Posts stopped appearing

I applied this plugin on a website I built but it all of a sudden it stopped posting on March 4, 2014. How can I fix it?

WEBSITE: Runnels Car Wraps

Here is my system info:
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Versions
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Feed Them Social Plugin version: 1.4.2
WordPress version: WP 3.8.2
Installed plugins: Akismet by Automattic version 2.6.0, Calculated Fields Form by CodePeople.net version 1.0.1, Contact Form 7 by Takayuki Miyoshi version 3.7.2, Feed Them Social by SlickRemix version 1.4.2, Jetpack by WordPress.com by Automattic version 2.9.3, Post Thumbnail Editor by sewpafly version 2.3.0, SEO Ultimate by SEO Design Solutions version 7.6.4, Twitter Facebook Social Share by Kunal Chichkar version 2.4.2

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Server Environment
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PHP Version: 5.2.17
Server Software: Apache
WP Max Upload Size: 128 MB
WP Debug Mode: No
fsockopen: fsockopen is ON

https://wordpress.org/plugins/feed-them-social/