When the “Welcome to Diablo IV Forums” panel shows up for the first two posts, the link that leads to the guidelines doesn’t work properly. Maybe because this is a beta or this is the EU subdomain 
?
The link in question: 404 Not Found (blizzard.com)
Edit: Maybe it was suppose to lead to this, but I am not sure 
Blizzard Support - Forum Code of Conduct (battle.net)