Subscription Box Not Working After Removal from Sidebar

I recently purchased the Subscribe By Email plugin and do not want it as part of my side bar. (My layout breaks on cell phones whenever there is a side bar.) So what I did was install the widget in the sidebar, copy the subscription box HTML, paste it with the regular content, and get rid of the side bar. For some reason, it is not working now. I tried entering an E-mail to subscribe but it gets stuck appearing to load and never stores the E-mail address. My website is a corporate entertainment website here. Can you tell me what is wrong? Thank you.