Hi,
Can you clarify what kind of password protected page is it? Is it a plugin?
If you get a blank page, you can try to enable WP DEBUG.
Thread Starter
Li-An
(@li-an)
It was a classic WP password protected page.
I tried again on a test blog. And it works. So, it seems it’s not entirely related to Ninja Firewall. More stunning, it seems to work today on my main site. I have to investigate more – maybe something to do with Cache plugin.
It may be related to the Login Protection since the form is submitted to the wp-login.php script.
See this discussion: https://wordpress.org/support/topic/password-protected-pages-are-being-blocked
One day we will probably add an option to apply or not the Login Protection to password-protected pages too.
Thread Starter
Li-An
(@li-an)
It’s not that as I selected “activate login protection only under attack”. But maybe there was an attack 🙂