Can't connect to FreeOnes

[GodsEmbryo]

When trying to open FreeOnes in my browser I get this error:

(I translated it in English):

Problem loading page

Damaged content error

The page you are trying to view cannot be displayed because there was an error in the data transfer detected.

Please take contact with the website owners to inform them about the problem.

The problem first occured with my bookmark in Firefox. When it didn't work I tried via Google, but that didn't work either.

The problems occur with the links:
Premium Link Upgrade
Premium Link Upgrade

But not with all the other sublinks like:
board.freeones.com/
Premium Link Upgrade
or other links given by Google. These work. However, when I try to go to the main page via these links, I get the same error

Additional info:

Browser: Firefox 18.0.2
Windows 8

Add-ons known to be troublemakers:
Shockwave Flash version 11.5.502

Problem on my end or yours?