"User accounts may be registered" selected but buddypress won't allow registration pages

So just trying to get this set-up, if I’m using BuddyPress I understand s2member uses the buddypress registration page…is that right?

When I go to BuddyPress Pages in settings I get this -

So I go to the Network Settings and have allowed user registrations & saved. Refresh the page and it says that user registrations are allowed.

But if I go back to the BuddyPress settings I still get the message (above) that I need to allow registrations!