How To Uninstall / Remove A VPN Device Management BCFS

I'm trying to remove a few languages which is present as the localized language in my app (under language section) in iTunes connect but when I try to remove it, it allows me to remove but when I try to save these changes Apple is prompting me an error message "You have one or more errors on this page. • An error has occurred. Try again later." Can anyone, please let me know how can I remove a localized language?

When I tap to move to another screen and go back to the previous screen the View on navigationBarItems is partially obscured Hope can you help me !... Thanks