Cyndy, sorry I wasn’t clear enough. I used one of the security plugins to change the login URL. So if I go to the wp-login.php page, it gives me a 404. The only way to login is by using the login1475 URL.
But when I use the login175 URL, and I put my username and password (which are correct), it redirects me to the wp-login.php page, which as I said it’s a 404.
It’s a loop I don’t know how to get out from.