Problem while sending Test Email

Hello, I have recently talked to my hosting provider which they then suggested I reach out here due to this issue being unresolved. This is a more recent issue as this was not a problem before.

Here is the description I get while trying to send a test email:

An issue was detected.

This means your test email was unable to be sent.

Typically this error is returned for one of the following reasons:

• Plugin settings are incorrect (wrong SMTP settings, invalid Mailer configuration, etc).
• Your web server is blocking the connection.
• Your host is rejecting the connection.

Recommended next steps:

1. Triple-check the plugin settings and consider reconfiguring to make sure everything is correct. Maybe there was an issue with copy&pasting.
2. Contact your web hosting provider and ask them to verify your server can make outside connections. Additionally, ask them if a firewall or security policy may be preventing the connection – many shared hosts block certain ports.
   Note: this is the most common cause of this issue.
3. Try using a different mailer.

Need support?

WP Mail SMTP is a free plugin, and the team behind WPForms maintains it to give back to the WordPress community.

To access our world class support, please upgrade to WP Mail SMTP Pro. Along with getting expert support, you will also get Notification controls, Email Logging, and integrations for Amazon SES, Office 365, and Outlook.com.

Additionally, you can take advantage of our White Glove Setup. Sit back and relax while we handle everything for you! If you simply don’t have time or maybe you feel a bit in over your head – we got you covered.

As a valued WP Mail SMTP user, you will get $50 off regular pricing, automatically applied at checkout!

Alternatively, we also offer limited support on the ww.wp.xz.cn support forums. You can create a support thread there, but please understand that free support is not guaranteed and is limited to simple issues. If you have an urgent or complex issue, then please consider upgrading to WP Mail SMTP Pro to access our priority support ticket system.

Please copy the error log message below into the support ticket.

HERE IS THE ERROR LOG:

Versions:
WordPress: 6.7.1
WordPress MS: No
PHP: 8.3.6
WP Mail SMTP: 4.3.0

Params:
Mailer: gmail
Constants: No
Client ID/Secret: Yes
Auth Code: Yes
Access Token: Yes

Server:
OpenSSL: OpenSSL 1.1.1w 11 Sep 2023
PHP.allow_url_fopen: Yes
PHP.stream_socket_client(): Yes
PHP.fsockopen(): Yes
PHP.curl_version(): 8.7.1
Apache.mod_security: No

Debug:
Email Source: WP Mail SMTP Mailer: Google / Gmail { “error”: “invalid_grant”, “error_description”: “Bad Request” } Please re-grant Google app permissions! Go to WP Mail SMTP plugin settings page. Click the “Remove OAuth Connection” button. Then click the “Allow plugin to send emails using your Google account” button and re-enable access.