I think we need to vote with our wallets, and if there isn't a response within the day as to whats going on we should all process for a refund. We can all rebuy the game if/when they fix it.
The lack of ANY post about this is simply disgusting, I expected some bugs, beta worked fine on win7, I bought the product with the expectation of at least a SEMI functional multiplayer though!
Been waiting on this game for YEARS, and they cant release it working for a good portion. I only really bought the thing to play MP.
I'd also recommend leaving at least a TEMPORARY negative review addressing this, they might fix it quicker if they realise people aren't buying it because of our VALID concerns and warnings.
Here is the review I have left if you'd like to copypasta:
Multiplayer is currently not working for people on windows 7, I got the beta for free and it worked fine on that.
There are currently hundreds of posts on their forums asking for help. And there hasn't been a SINGLE dev response.
I will be processing for a refund at the end of the day if there is no response or hotfix. I only really bought this to play multiplayer. If it worked I would recommend it!