Disable Access to wp-login.php not working

I have activated the Custom Login Page with custom URL.

Processing wp-login.php is set to: Block access to wp-login.php. Disable dashboard re-direction is enabled.

I cleared my cache and I even used tried using an incognito window in my browser. However, wp-login.php still works. Any attempt to use /wp-admin successfully fails, but wp-login.php always still works even though I blocked access to it.

Why isn’t this working? Is there some setting I missed or is something else wrong? I need this to work properly.

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