Supporter + paypal


I'm having an issue with the supporter plugin. I have set my paypal setting, but when registering as a new user, even if I select supporter, I am never asked to pay, it just goes straight to account created and upload avatar. I have it installed as per the instructions. The only thing that I can think of, but couldn't imagine it was an issue is that my paypal account is Irish, so it's, I have been using paypal site United States, I have even tried United Kingdom.

Maybe I have missed a step, it would be great if you could throw some light on this for me.