This is a pretty easy fix, and a very common problem.
What’s happened is that the URL that the form is trying to send to is not complete – they’ve left the https://
off the start if it, so that “forces” browsers to add the URL to the existing URL, which obviously won’t exist.
You’ll need to change this part of the code:
<form name="KEEP IN TOUCH" onsubmit="if ( subbox1.value == 'First Name') { subbox1.value = ''; } if ( subbox2.value == 'Last Name') { subbox2.value = ''; }" target="_blank" method="post" action="clevernewhome.us5.list-manage.com/subscribe/post?u=873f774c298c4a00108d4d676&id=da0864589f" id="subscribe">
to:
<form name="KEEP IN TOUCH" onsubmit="if ( subbox1.value == 'First Name') { subbox1.value = ''; } if ( subbox2.value == 'Last Name') { subbox2.value = ''; }" target="_blank" method="post" action="https://clevernewhome.us5.list-manage.com/subscribe/post?u=873f774c298c4a00108d4d676&id=da0864589f" id="subscribe">
It’s a small fix, but it is needed.