Someone had previously reported an issue like this. Where they couldn't queue into any instance on one of their characters in any class. But they could queue on their alts. I'm on my phone right now, so i can't find the thread for you, but try searching for that one and see if they had a solution.

Can you queue into any other instances. If you can, try the PF option just to get past this one. It might be less of a headache than trying to sort it out via tickets. You really only ever run it once, unless it pops up in low level roulette.