WordPress Login does not work
If the login doesn’t work in WordPress or the password reset via email doesn’t work, then probably a wrong domain was used.
Check if the URL works with or without www, otherwise disable all plugins by renaming the following folder: wp-content/plugins to e.g. wp-content/plugins.orig
Next, you can make the following settings to force WordPress to use a specific URL (wp-config.php). Add this code at the very end of your file.