All! Question: I’m using Pro Sites for users

Hi All!

Question:
I’m using Pro Sites for users to subscribe.
When testing I’m able to signup successfully but after logging in after activation I get this error:

“Sorry, but you do not have permission to upgrade this site. Only the site administrator can upgrade their site.

« Choose a different site”

I have ‘Pay to blog enabled’, and I’m not getting to the point where I’m prompted to pay.