Paypal button with drop-down

I have a problem with a website I just created for a client. They generated a Paypal “Buy Now” button with their Paypal account, and then sent me the code for me to put on their Membership page – here:

http://nysbs.org/membership/

The button has three drop-down fields. (I could have sworn they were working at one point, but now that I’ve pulled the wordpress out of the testing sub-directory into the root directory, the dropdowns don’t work at all.) I did do some searching on the forums, but found only old threads and inconclusive solution suggestions.

Can I get some help with this, please?