I'm not a native born English speaker. So I write in two languages on the web.
I added both layout (English and the other) and it works good. When I log out the system and log in again, "keyboard layout indicator" get disappeared and I'm not able to change keyboard layout even by using keyboard shortcut (Alt + Shift)

my question is :
How can i fetch "keyboard layout indicator" again to be able to switch between layouts?
What is the name of "keyboard layout indicator" (to exec in terminal)?