I have the same problem. The server is not showing up in the browser and i cannot connect via the IP. It says the server is offline. Yesterday I was able to play just fine. Restarting game and PC does not help.
I am running the steam version of DCS (pls dont hate xD)
I had the same problem, I was unable to see Blue Flag and some other servers ( like DDCS ) in the list.
When conected via mobile provider, everything worked just fine. Isue was just with my main provider which is Fixed Wireles conection.
In the end my main provider confirmed issue on his side. There was something wrong with the Aces Point setup. Once they switched me to other AP, everything started to work.
holy shit.. just spent hours trying to play here.. needless to say some cuck decided to leave out you guys are using beta and not the actual build.. i want to spit in someones face for wasting my time and day.