Affiliate Sign Up Using the Membership Module

Please help me out at: http://harounkola.com

I'm using the Membership plugin to sell my mentorship program on my site, and using affiliate plugin to market.

I've created a FREE Subscription called "Affiliates" that I want anyone interested to sign up for,

I've done this by adding them to a level that I set up with a 0 amount, and lasting 365 years.

The sign up link to that is directly on my navigation, and goes to:
http://harounkola.com/join/?action=registeruser&subscription=18

On completion of the registration on WordPress system, the user is directed to the screenshot shown.

I'd like them to be directed to http://harounkola.com/affiliate immediately after the sign up process, to enable links and insert paypal info.

Please help me configure my system properly.

Thanks
Haroun