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Versions
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Feed Them Social Plugin version: 1.5.8
WordPress version: WP 3.9.2
Installed plugins: All in One SEO Pack Pro by Michael Torbert version 2.2, All In One WP Security by Tips and Tricks HQ, Peter, Ruhul, Ivy version v3.8.5, Contact Form 7 by Takayuki Miyoshi version 4.0.1, Feed Them Social (Facebook, Instagram, Twitter, etc) by SlickRemix version 1.5.8, Google XML Sitemaps by Arne Brachhold version 4.0.7.1, Revolution Slider by ThemePunch version 4.1.1, Social Auto Poster by WPWeb version 1.1.0, StatPress by Daniele Lippi version 1.4.3, WP-Optimize by Ruhani Rabin version 1.8.9.7
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Server Environment
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PHP Version: 5.3.26
Server Software: Apache/2.2.15 (CentOS)
WP Max Upload Size: 64 MB
WP Debug Mode: No
fsockopen: fsockopen is ON
cURL: cURL is installed on this server
Thanks for contacting us. Some more details as to why it is not working would be helpful.
Have you tried disabling your other plugins and just leave FTS active?
Also if you are using a shortcode please paste it here and also an example link would be helpful too.