Weird things happen when redirecting domain name

I am trying to redirect a domain that is hosted on DH to a different site, but am having some trouble.

I’ve gone through the regular procedure in the ‘manage domains’ section of the panel, but when the original domain name is typed into a browser, an added ‘Home.html’ is tagged on to the end of the URL in the navigation bar:

the original domain is:
I want to redirect it here:

however, every time I type in ‘’, it redirects to the website: and a 404 message.

Strangely, the redirect works on mobile devices (i.e. my iphone, ipad).