OJS deployed on subdomain, wordpress on main domain, Unable to complete Gmail XOAUTH2 via get_oauth_token.php

Software Support
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Thanks @gian !
Though the things aren’t working as mentioned in phpmailer/ojs guides (such as on live web environment, get_oauth_token.php doesn’t result in refresh token), I somehow was able to sort this issue by:

  • Generated the refresh token in localhost environment as suggested by PHPMailer support (mentioned above).

  • Used smtp_port = 587 and smtp_auth = tls in config.inc.php file

This resolved the smtp connection issue.
However, now I am facing the next problem. if you, or someone else, can help me?