Hello
Me and my friend bought the game and now we can't play together.
Every time we create a lobby we cant join it. it just says:
Network error
This server has lost connection. Please choose another one.

I have exactly the same problem. Tried everything that I found on the web to no joy. I really want to play this with my friends :/

I can join for a while but the game always end up kicking me out around 2 or sometimes 8 minutes approximately.
When trying to restart a mission after a fail or rejoining a game after a disconnect crashes the game..