Changing in app language issue

I'm facing an issue with iOS 14.9 the device language is English but after trying to change the in-app-language to Arabic, The app working fine then restarting the app I found that the app returned to the English language again

Could anyone help me why that happens? and how to solve this issue?

Do this again follow some of these simple steps mentioned below:

1.Open Settings. On the Home screen, tap Settings. 2.Tap General. On the next screen, tap General. 3.Select Language & Region. Scroll down and tap Language & Region. 4.Tap Device language. On the next screen, tap "[Device] Language". 5.Select your language. 6.Confirm your selection.

Do check them out I hope you would find it suitable & if you feel any queries free feel to contact me on the mail id mentioned in my Profile.

Changing in app language issue
 
 
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