"Register" link on wp-login page

I have a question about the wp-login page.

On my wordpress installation I have to register pages, "/register" and "/register-2".

I have register set at the BuddyPress registration page, and register-2 set as the membership 2 pro page. In my add on options, I have buddy press enabled, but NOT using the buddypress registration page. I use the custom profile fields plug in to populate the membership 2 pro registration page.

On the wp-login.php page, there is a link named "register". Standard in all sites. It links to "/register-2". When clicking that link, the page loaded is blank, with only a title and not a form.

What am I missing?