Redirect issue

Hi there,

I am the free version of your plugin and really love how good it is. So thank you!
I am using it in conjunction with PMPRO and User Meta to protect a company site.

I am facing an issue whereby the redirect is not working after one attempt.

For example.
A non-admin user logs into the site.
They are redirected to their correct page.
They try to access a restricted page.
They click on the button which informs someone who has landed on a restricted page that they need to log in to the right level to access.
This button brings them back to the login page.
They enter their details again.
This time the redirect does not work.
They end up in the wp-admin dashboard area.

How can I prevent this from happening?
The site is for many staff who will press the wrong buttons so I need to make it foolproof!

CHeers
John