Most people are only able to see the "Register" button when trying to use the Page Approval Plugin. We have registered and received a key. Only one person can use the approve/unapproved button. Everyone else is seeing the Register button and cannot use this plug-in including myself. I am an administrator, but do not have access to installing/configuring plug-ins, so I will have to work with our architect if changes may be needed from that end.
We are using Confluence 5.6.6 and this is our first time installing this plugin.