For those of you who can't see server lists (or only see a couple of servers), please verify both Red Orchestra's and Darkest Hour's game cache until you can see the server lists. TWI will be working on this issue and hopefully have it fixed next week. In the mean time, please verify your cache to play now. If you don't know how here is a helpful link: https://support.steampowered.com/kb_article.php?ref=2037-QEUH-3335
Because this has had such a large negative impact on the player population of DH, there will be scheduled events and maybe we'll see a few servers fill up. Stay tuned.