(400) Bad Request

I’ve been working on this for about three hours and I am getting nowhere. I can recreate the credentials on Google in my sleep. But I keep getting a Bad Request error. Any help would be appreciated. thanks

OS: Linux a2plcpnl0580.prod.iad2.secureserver.net 2.6.32-673.26.1.lve1.4.18.el6.x86_64 #1 SMP Fri Oct 21 11:58:14 EDT 2016 x86_64
PHP: Linux 5.6.28 C
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=No, allow_url_fopen=Yes, mcrypt=Yes, zlib_encode=Yes
WordPress: 4.7.2 en UTF-8
WordPress Theme: GeneratePress
WordPress Plugins: Gravity Forms, PGC_PDP_setcookie, PGC_forms, AM Events, bbPress, Display Widgets, Easy Columns, Email Users, Export Users Data to CSV for MS Excel, Garage Sale, Huge IT Google Map, GP Premium, Members, Memphis Documents Library, Menu Items Visibility Control, Netcam / Webcam Live Stream, Postman SMTP, Redirect After Login, Wordfence Security, WP Photo Album Plus, WP Support Plus
WordPress wp_mail Filter(s): wp_staticize_emoji_for_email
WordPress wp_mail_from Filter(s): wordfence::fixWPMailFromAddress
WordPress phpmailer_init Action(s): mailusers_fix_return_path
Postman: 1.7.2
Postman Sender Domain (Envelope|Message): pgcsoaring.com | pgcsoaring.com
Postman Prevent Message Sender Override (Email|Name): No | No
Postman Active Transport: Gmail API (https:oauth2://www.googleapis.com:443)
Postman Active Transport Status (Ready|Connected): Yes | Yes
Postman Deliveries (Success|Fail): 0 | 0