Hey all,
Our developers are aware of this issue, and it should be fixed with the release of the expansion. While Customer support does not have a workaround to offer at this time, please do try again once The War Within is live, and you should be able to continue as intended.
Sorry the for delay, and thank you for your patience. 
P.S: we are also aware of an issue where players can run into an invisible wall in the Rogue Order Hallf. This is a different bug, and should be fixed soon.