Com3, newguy here. The problem occurs on my iPhone, iPad and Mac.
I'm having trouble setting a sitter. I start with the "preferences" tab, then Ávatar', then 'manage sitters and duals', then there is another button to "Manage", and then I'm back to the home page, but without an active window! There is no place to select anything, except the "Lobby"button which leads back into the game!