Missing WordPress login page
If you cannot log in to your WordPress website using your default settings and your URL such as wp-login.php or wp-admin, you might be directed to a 404 error or page not found screen. It is possible that you may be using an iTheme security pro plugin, and it has automatically changed your login URL slug to something different.
A URL slug identifies a particular page on your website in an easy-read format. In other words, it’s the part of the URL that clearly explains the page’s content. If you can remember your login URL slug, you can proceed, but if you can’t, please disable the iThemes ‘Security Hide Login’ feature before you start your backup or migration process. If migration is already complete, it is recommended that you create a new WordPress installation and then re-export the backup and deactivate the iTheme security pro plugin.