Can't get into Llevigar's library

Whenever I insert the books in the shelves to get the key to the secret library, the shelves door with the key just don't open. I've gone to class selection, switched servers, restarted the game. the door still won't open. Has anyone else encountered this? how do I solve this?

 

This is happening to me too, and it's been a while now. I can't get the key to llevigar's secret library since inserting the books into the bookshelves just doesn't do anything. I've also completed all of the other llevigar plains discoveries, so I'm not sure what's up with this one.