I mostly play on my Mac, but I have FoE installed on my iPhone, as well. I am playing on two worlds in FoE, and it is easy to switch between them on my Mac by logging off and then playing again and choosing the other world. However, I can't figure out how to switch worlds on the mobile version. I can't figure out how to log off, and when I close the app and then start it again, it always logs me in automatically and restarts in the same world. How do I switch between worlds in the mobile app?