membership and

I can’t seem to get to work correctly. I create an account and then I fill out the subscription form. When i press submit it kicks me back out to the register page. No error message or anything. No payments are even registering with I have the login id and transaction key set up, have a md5 hash and ssl. I also made sure plugin and were in live mode. Also when i try to use the popup form, it gives a blank page with a return of 0. any help would be great.