Cant get the premium subscription to work HELP ME

ok i am having a problem. i cant seem to get past the confirm order part of the buy a subscription thing and i am just wondering if anyone can help me figure out what i am doing wrong. Every tine that i hit the confirm order button it just refreshes the confirm order screen and that is all. can you please help me!!! i have been trying for 2 days to get this to work and i really want it!

Check this thread:,com_kunena/Itemid,65/catid,5/func,view/id,16673/