Hmm. So I actually got it working again..
What I did was renamed the plugins/better-wp-security/ folder and then the login url started working again. And after renaming the folder back to it’s original name the login url kept working.
Just turning it off and on again seemed to do the trick.
So, I have a similar problem. I think it is to do with WP-security.
I have the /wp-admin/ url changed to something more secure /admin-secure/
Two weeks ago when I last logged in everything was lovely. Also updated both WP-security and WP. Today, going to the log-in page I get a 404 (I can access the website just fine).
Even though the /wp-login.php?(WPrandomSecurityKey) is correct.
I tried rewriting the .htaccess file through ftp but then the whole website becomes inaccessible.
I’m stumped guys. any help/insight would be greatly appreciated.