Hi there,
Thank you for reaching out to us.
As per my understanding, you have enabled the backdoor login option in the plugin, however, while using the backdoor URL, you are being redirected to the IDP login page instead of the WordPress login.
Can you please provide me with the following information so that I can help you further with this?
1. The version number of the miniOrange SSO plugin installed on your site. You can get this information by navigating to Plugins > Installed plugins from your WordPress admin dashboard.
2. Do you use a custom WordPress login URL instead of the default one (which is, /wp-login.php) ?
Looking forward to hearing from you.
Thanks!