Multiplayer Joining Problem

[lil_misfit]

I just got the steam version of this game and was hoping to play this with my dad who bought the NON-steam version of this. When ever we try to accept eachothers challenges (no matter if they are private or not) nothing happens. The challenges dissapear from the challenge menu and never appear again in the my challenges menu. Just wondering how to fix this.

[VPaulus]

I'm Sorry but we have been having issues with the multiplayer server since Friday.
Our web admins are still looking at the issue.
We apologize for all the inconvenience.