AWeber Integration Plugin not connecting to AWeber regardless of selection

I have gallery areas of my site (The X-Files) accessible to members only. Once someone registers, they have access through a plugin called Member Access and it works beautifully. It’s also important that the member be on my AWeber list so I installed a plugin called AWeber Registration Integration by G. Kauten which seemed to be exactly what I need to bring the two together. Unfortunately, I can’t get it to work. The registration works fine. The areas I need help with are:
1. By default, I need to have a checkmark in the box to allow a newsletter but have no idea how to alter the code to do that. Even better would be to remove that option entirely and simply state something like this: I understand that by registering for this site I am agreeing to receive occasional emails. I also understand my email address will not be shared with any third party sites.
2. At the moment, it doesn’t matter whether the box is checked or not – there’s still no connection with AWeber. When I test it and register as a new user with the box checked to receive a newsletter, I get the email with my password for the site but nothing at all from AWeber. In the form ID field in WordPress I have entered: name=’meta_web_form_id’ value=’xxxxx’ with the x’s being my number.
This is a plugin that would be exactly what I need – if I can get it to work! Does anyone have any ideas what I’m doing wrong? I’m using WP 2.9.2

My site is here