Multisite Subsite New User Registration Main Site using coursepress

When I click on the "register" link on a blog like https://demono.simplylearn.no/wp-login.php it first send me to:
https://demono.simplylearn.no/wp-login.php?action=register
But then it redirects me the the main blog? https://simplylearn.no/funksjoner-og-priser/?action=new_blog
Why is that is that an setting in pro site? it sends me to Pro sites table.
This needs to say on the sub domain.