Send them to the WordPress login screen / Edit Screen

Hi,
I use your very useful plugin so that people now have to login.
I works great.

Nevertheless,
several of my users, while being redirected to WP Login Page stopped there, some thinking the site was down,
some others thinking they didn’t have to rights to access.

How can I edit or create a screen, keeping the login feature of course?
Thank you.
Best regards.

http://wordpress.org/extend/plugins/restricted-site-access/