thank you so much Juan for replying
i tried it and correctly worked.
i have other main problem with default language, how to change default language from "en" to "fa" when app runs for first time. I changed config.json file in 2 below ways but again language of app was English for first time and users should change language in app settings
"default_lang" : "fa",
"languages": {"fa": "فارسی"}
or
"default_lang" : "fa",
"languages": {"fa": "فارسی", "en": "English"}
Hi,
if the mobile device is using the english language you will see the app always in english (the default language is only used when we couldn't retrieve the language from the device)
Can you confirm if the device is in English and not in Farsi?
Juan