Pro Site Signup Not displaying Upgrade Options

For reference, my site is:

I am trying to give users the option of signing up for a pro level subscription on my multisite install but I cannot get it to display anything but the standard signup pages with no reference to the upgrade or checkout process. I am incredibly frustrated and would greatly appreciate any experience with this. I've searched these forums and followed all advice so far. does not change the signup process. The Signup Message that I wrote is also not displayed. Show Option On Signup is checked.

If it helps, I am using the Wootheme Whitelight.

- I switched the theme over to twenty11 and the Upgrade to Pro notice did show up. So now I am stuck.. I reactivated my Woothemes whitelight theme, but the upgrade information is gone again.