Password Protect redirecting to the wp-admin login screen upon submit

I am getting sent to the wp-admin page whenever I try to use the password protect plug in. I have run several test using a couple different passwords on different posts/pages, as well as a few different browsers, and in almost every case I get redirected to the wp-admin login screen instead of seeing the content inside the Password Protect shortcodes. Am I missing something in the set up and installation?

Thank you very much for any help anyone can provide!

ML