Authorize.Net Payment Plugin Problem

I've been having trouble getting this plugin to work. When I get to the checkout stage and have to enter the credit card info, the very end asks for a verification code but nowhere to enter the field. Nowhere in the plugin does it say anything about it and I can't find a way to disable it. Is there supposed to be a ReCaptcha or a checkbox?

Thanks,
Brandon

Dear Brandon,

Thank you for submitting the ticket here. I think it caused by some wrong settings. Please go to joomdonation.com/support-tickets.html to submit new ticket to EShop category to send me the super admin account to your site so I can help you to check.

Sincerely, Giang