The launcher is misbehaving. Its telling me all servers are offline even though I know they are not. When I choose singularity it flips over to online. So do TQ when I check the server list (even tells me 30+ logged in). When I switch back to TQ it flips back to offline.
You likely have already tried but in case you did not:
Restart launcher/computer? Or try to reset the launcher to default. (To be found in the " Settings", bottom left of the launcher window.)