New User Selects Subscription on Registration Issue

Hi Leighton, 

I've been playing about with this and already have three subscriptions created which is great seeing as I only bought the module yesterday evening. so, very happy with it. 

One problem i'm having is, when a new user comes to the site and selects a subscription on the registration page (as added by the module), they create their account but nothing happens, they get logged in but they don't get bounced off to PayPal to pay for the subscription.

Now, as mentioned, I'm new to the module so maybe I'm just missing a setting or something, so apologies if tis is a stupid question. 

Thanks, 

Shane