Postman SMTP causing connectivity errors with Tickera

Hi,

I use your plugin to send emails to my customers on classes.purplefoodie.com. I use the tickera plugin to send confirmation emails to customers after their payment is received. I do this by changing their status in my admin from “pending” to “paid”. (https://ww.wp.xz.cn/plugins/tickera-event-ticketing-system/).

Recently I noticed that, while changing the status, some confirmation emails aren’t going through, and my orders page is stuck in a loop. The order status changes but the emails aren’t being sent and the page hangs.

I contacted Tickera and they figured out that the Postman SMTP plugin is causing an issue.

Would you be able to troubleshoot if I provided you my admin details, please?

Thanks,
Arjun

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OS: Linux gator3325.hostgator.com 3.12.41-77.ELK6.x86_64 #1 SMP Fri May 1 18:21:30 CDT 2015 x86_64
PHP: Linux 5.4.45 C
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=Yes, mcrypt=Yes, zlib_encode=Yes
WordPress: 4.6.1 en_US UTF-8
WordPress Theme: Rosemary
WordPress Plugins: WordPress Event Ticketing, Akismet, Alpine PhotoTile for Instagram, Contact Form 7, Tickera CSV Export, Final Tiles Grid Gallery Lite, Forget About Shortcode Buttons, Google Analytics Dashboard for WP, Header and Footer Scripts, Hello Dolly, Postman SMTP, Slider, Vafpress Post Formats UI, Widget Logic, WP Author, Date and Meta Remover
WordPress wp_mail Filter(s): wp_staticize_emoji_for_email
WordPress phpmailer_init Action(s): wpcf7_phpmailer_init
Postman: 1.7.2
Postman Sender Domain (Envelope|Message): gmail.com | gmail.com
Postman Prevent Message Sender Override (Email|Name): No | No
Postman Active Transport: SMTP (smtps:oauth2://smtp.gmail.com:465)
Postman Active Transport Status (Ready|Connected): Yes | Yes
Postman Deliveries (Success|Fail): 1940 | 1724