Yes, this is possible. To log in with another account:
 

  1. Select ‘’Settings’’
  1. Select the ‘’Disconnect’’ button next to Facebook
  1. Exit the game
  1. Sign out of your current Facebook account
  1. Connect to the relevant account from your relevant Facebook app as well as mobile browser (it’s important that both browser and app are connected to the same account)
  1. Relaunch the game
  1. Select ‘’Settings’’

       8. Select ‘’Connect’’ next to Facebook