Unable to log out!

Overall – this plugin is working beautifully – – thank you!

We have a page that requires students to login in order to view the material.
At the top of that page, I’ve added a “log out” button.

I am the admin for this website, and my problem is that often I am unable to login as admin to do updates etc – – – even though I have clicked the logout link on the protected page. I clear the browser cache, I refresh the page – – then go back to view the “protected” page and still – it pops right up despite my having logged out.

The problem this poses is that I’m therefore UNABLE to login as ADMIN. When I try to do that – it tells me that “subscribers/students” are not permitted access to the Dashboard – it thinks I’m still logged in as a ‘subscriber’ even though I clicked “logout” a million times.

What am I missing here? Thanks again!

The page I need help with: [log in to see the link]