[AC Question]

I recently changed work network/security password and when that is done I have to update and change the password also on our WiFi network on my mobile.
For some reason the mobile will not let me save settings when I have written my user name and my new password. The only option is "Quit". I have tried to restart the mobile but it still doesn't work, I have also tried to erase the old network and add it again but that doesn't work either. Do you have any suggestions to this problem?