I had exactly the same problem except there was no sticker on the Glove Box.
If you go in the boot, lift the carpet and the floor covering to reveal the spare wheel, there is a cubby hole on the right hand side. This houses the router. There is a sticker on the side of the router which has the pass key on it. Its only small and as I'm 60 and need glasses, i needed to photograph it and then enlarge! Hope this helps. It was driving me nuts and the dealership had no idea!