Google API

I am setting up a new WordPress site. I am not a developer. I am trying to use a Google Apps account with the gmail API enabled, and Postman SMTP to connect my site to gmail. Within minutes of setting up the API connection I am getting this error in Postman’s email logs: Error refreshing the OAuth2 token, message: ‘{ “error” : “invalid_grant”, “error_description” : “Token has been expired or revoked.” }’

I have even generated a new API secret and put it into the Postman settings. I’ve enabled and disabled BlueHost’s free WordPress SSL. I cannot get my site to send out any sort of email (contact form submissions, order confirmations, etc.). I’ve contacted BlueHost’s tech support and they say it’s not them.

Suggestions?

POSTMAN DIAGNOSTIC TEST OUTPUT
OS: Linux box5059.bluehost.com 3.12.74-20170619.148.ELK6.x86_64 #1 SMP Mon Jun 19 19:48:05 CDT 2017 x86_64
PHP: Linux 7.0.12 C
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=Yes, mcrypt=Yes, zlib_encode=Yes
WordPress: 4.8.1 en_US UTF-8
WordPress Theme: FocusBlog
WordPress Plugins: Gravity Forms, Akismet Anti-Spam, iThemes Security, Facebook for WooCommerce, Imagify, Members, Postman SMTP, Thrive Apprentice, Thrive Clever Widgets, Thrive Headline Optimizer, Thrive Leads, Thrive Quiz Builder, Thrive Ultimatum, Thrive Visual Editor, UpdraftPlus – Backup/Restore, WooCommerce AvaTax, WooCommerce Customer History, WooCommerce Amazon Pay Gateway, WooCommerce Stripe Gateway, WooCommerce Google Analytics Pro, WooCommerce – Gravity Forms Product Add-Ons, WooCommerce, Yoast SEO, WP Rocket
WordPress wp_mail Filter(s): wp_staticize_emoji_for_email
Postman: 1.7.2
Postman Sender Domain (Envelope|Message): OurCityCares.org | OurCityCares.org
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 | 19

POSTMAN CONNECTIVITY TEST OUTPUT
Transport Socket Status* Service Available Server ID Authentication
None Login Plain CRAM-MD5 OAuth 2.0
SMTP https://www.googleapis.com:25 Closed No – – – – – –
SMTP https://www.googleapis.com:465 Closed No – – – – – –
SMTP https://www.googleapis.com:587 Closed No – – – – – –
Gmail API https://www.googleapis.com:443 Open ?? HTTPS googleapis.com n/a
Mandrill API mandrillapp.com:443 Open ?? HTTPS mandrillapp.com n/a
SendGrid API api.sendgrid.com:443 Open ?? HTTPS sendgrid.com n/a
* According to portquiz.net

Summary:

? ?? Port 443 can be used with the Gmail API.
? ?? Port 443 can be used with the SendGrid API.
? ?? Port 443 can be used with the Mandrill API.
? No outbound route between this site and the Internet on Port 25.
? No outbound route between this site and the Internet on Port 587.
? No outbound route between this site and the Internet on Port 465.
A test with “No” Service Available indicates one or more of these issues:

Your web host has placed a firewall between this site and the Internet
The SMTP hostname is wrong or the mail server does not provide service on this port
Your PHP configuration is preventing outbound connections
Your WordPress configuration is preventing outbound connections
If the issues above can not be resolved, your last option is to configure Postman to use an email account managed by your web host with an SMTP server managed by your web host.

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