When that happens to me, I back out and try again. It usually lets me in the second time. And if it doesn't, I just move on. I'm pruning my bank so that I can live without a sub until these kinds of issues are fixed. I play pretty casually anyway, in that I hit the forums more often than the game itself. lol
Que is fake. You'll be waiting for nothing. It's just the game bugging out. Just quit the que and log back in. Honestly they need to sticky this somewhere in the forums, or have a warning on the log in screen. .. there's been so many threads of people waiting and wondering why the que won't let them in. There is no que.