how far are you in all the quests? you might need to continue another one to continue with it. Orc war needs you to do the lizard tribe story for a bit and Northcrest conspiracy and Mythshore, so that could be it. also you can check what you've got done in the book on the bottom of the screen, it should say what you need to do next as well if you haven't checked it.
I’ve completed Lizard’s treasure and I’ve done everything up to “Progress the Orc War entry in the event log” on Northcrest Conspiracy. The only quest I can do at the moment is the Legends of Lakeshard. Every other one is related to the Orc War. I don’t know if it’s something i’m missing or if it’s just a bug. Also my sincerest apologies for the late response I fell asleep