Test email sends, confirmation email does not send

Test emails are sending fine but whenever a user registers they do not receive their email.

OS: Linux p3nlwpweb270.prod.phx3.secureserver.net 2.6.32-531.1.2.lve1.2.54.el6.nfsfixes.x86_64 #1 SMP Wed Apr 2 14:06:52 MST 2014 x86_64
HTTP User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.71 Safari/537.36
PHP: Linux 5.4.42 C
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=No, allow_url_fopen=Yes, mcrypt=Yes
WordPress: 4.3.1 en_GB
WordPress Theme: Customizr
WordPress Plugins: 1SEO.com Keyword Research, Beaver Builder Plugin (Lite Version), Bop Search Box Item Type For Nav Menus, Custom Post Type UI, Erident Custom Login and Dashboard, WP Forum Server, Google Analytics Dashboard for WP, Google News Sitemap, Google AdSense, Hide Page & Post Titles, Insert Headers and Footers, Collapse-O-Matic, Multi Rating Pro, Page List Widget, Post Duplicator, Post Tags and Categories for Pages, Postman SMTP, Recent Posts Widget Extended, Relevanssi, Search Engine Visibility, Search & Filter, Fast Secure Contact Form, Stop Spammers Spam Control, TablePress, Widget Importer & Exporter, Wordfence Security, Yoast SEO, WordPress Password Policy Manager, WP to Twitter, WP101 Video Tutorials, wpDiscuz – WordPress Comments
WordPress wp_mail Filter(s): wp_staticize_emoji_for_email
Postman: 1.6.24
Postman Sender Domain (Envelope|Message): gameratedgames.com | gameratedgames.com
Postman Prevent Message Sender Override (Email|Name): Yes | Yes
Postman Transport URI: gmail_api:https:oauth2://www.googleapis.com:443
Postman Transport Status (Configured|Ready|Connected): Yes | Yes | Yes
Postman Deliveries (Success|Fail): 454 | 43

https://www.ads-software.com/plugins/postman-smtp/