Hello at first I thank you so much for such good plugin.
I am using your plugin in one of my webpage. Everything is normal.
In my second webpage the option to add the “Languages switcher” to the menu is missing.
Both sites have the same wordpress version and the same theme. On the first one I Just click on the checkbox and then “Add to menu”. But in second one “Add Languages switcher” to menu option is missing in the menu settings.
The only difference bettwen both sites is the language of the wordpress was Turkish in the first one and the second one is English.
Thanks for your help.