First off, if someone fills in the form and clicks the link in their email they are taken to the correct URL. They can look at the page all they like, it works fine.
However if they go away from the page, and then click the link again in their email to be taken back there, they can't return. Is there a way around this?
Secondly in this situation, or if someone tries to sign up for a second time using the same email they are taken to the homepage of my site.
On the homepage I have a static page with no widgets. Therefore the only warning ("?wp_email_capture_error=Wrong confirmation code" and "?wp_email_capture_error=User already present" respectively) appear in the URL itself. Is there a bit of php I can add to my homepage to allow any error message to appear in the content of the page itself?