Due to a hardware issue our hoster is having, some our servers are down. What's down is the wiki.vyos.net/forum.vyos.net host and the packages.vyos.net hosts.
The new website, vyos.io, is up, it's hosted in a different place. If you need to download VyOS images, you can use any of the mirrors, e.g. 0.de.mirrors.vyos.net.