We suffer from this problem since weeks. Everything works fine for a while and then some of our instances are shown and others are not.
Direct connecting works, even if he says "server offline" a couple of times but after some tries you can connect.
There is no network issue on our side. Right now there are 4 instances running and the game servers page in the profile shows what you see on the attached image. You can connect to ALL the instances directly by IP:Port.
Sometimes all 4 instances are shown in browser and sometimes only one or two.
And it does not matter if there is 1 instance, 2 or 4 running, the error seems to appear randomly.
