You may want to try keeping all your characters free at the same time and see what happens, also make sure your task bar is not showing any quests for you to do. I know I am stating the obvious, but sometimes we miss things that are right in front of us. Also, go through your build menu, that might help-seeing what is locked or not. Assuming it isn't a true glitch holding you back, going through these things one step at a time may help. Good luck, I know this probably isn't too helpful, but I thought I would give it a shot.
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