name & email address of subscriber don't take

hi i am trying to test signing up (and the form looks great on the website) but i get an error message to ‘please fill out this field’ even after i’ve filled it out eight times, refreshed, done again, etc… and i can’t even test if signing up goes to the right email address (oh, and once it works: how do i change the email address signups should go to on our end?)

thank you for your help

http://wordpress.org/plugins/newsletter-sign-up/