Sadly, upon looking up the website. It seems over-all broken/useless.
Download Client button leads to: download.com/
That alone you won't able to download the server so I doubt anyone would have access to it.
- OR - you just gave the wrong link and I might be wrong. Let me know
EDIT: the link you just posted leads to a website and it's homepage says: "DekadaRO"
// See attached photo.