Members Given Access to BuddyPress BUT not appearing in BuddyPress list of Members?

All my 10 testers tried to sign up to my site.

Only one ended up in the BuddyPress area (and PC when he tested it).

I then gave permission (ie added them to FREE Membership under Subscriptions AND added Access to BuddyPress as the access level).

NONE of them are appearing in the BuddyPress area -with or without the Membership add on activated or deactivated.

How do you give them Access to BP pages if not through the All Members tab in Membership (Admin dashboard)?

WHY are they appearing in the All Members (Membership) and All Users (Users) lists but have no access to the BuddyPress area.