Sub Site logins and Registrations doing strange things

When I try and register a new account from a subdomain site.. ex.
https://adeon.lightworkers.org/
It takes me to https://lightworkers.org/pro-site/?action=new_blog
--
Process should be.. User registers and is taken back to the subsite they registered through.
So I should end up back at :
https://adeon.lightworkers.org/
Right?

Also if I try and Login to
https://adeon.lightworkers.org/ using the Login Option in the site meta.
It brings up the login form.. I enter details.. then it takes me to the main site lightworkers.org
(And shows me as Not logged in)
If I then return to https://adeon.lightworkers.org/ I will be logged in.

Shouldn't I be able to just login to the network through https://adeon.lightworkers.org/

Am I missing something here?

Thanks

Adeon