Yes tried all of that. It simply does not recognise my login page , either the page I created at domain/login or the wp login page wp_login.php.
This maybe because I have built the wordpress site in a folder rather than the main domain, ie the wordpress install is at domain/uk and the login page is at domain/uk/login and the wp login page is at domain/uk/wp_login.php but this makes it useless for me , and probably many others.