When you subscribe to a private service, the subscription will need to be approved.
This is needed in order to avoid spamming of users, i.e., service providers creating
subscriptions for all users and spamming them.
Go to the My Subscriptions tab, and click the Non-approved link.
Click the approve link below the service you wish to approve.
You are now subscribed and will begin receiving content according to the service
terms.

Above you see a screenshot from the subscribed page in Streamspin.