i have been wondering about this, a couple of times now.
I have the feeling, someone else is logged also into my account also. I keep wondering that the cargo ship has been used, although i dont remember it, gems being spent, i dont remember about etc...
I have changed my gmail and facebook password a couple of times now, it doesn't seem to help. I recently lost a suitcase containing both a phone and a tablet that had access to the game...
any idea what i could do? How can i make sure, the game logs out of all devices that are not my own?
Is there a forced log out?