Cannot write in password field in Blu Age modernized application

It seems that you are using the “Insert Mode”, and you should instead use the “Overwrite Mode”. The password fields are filled by default, thus preventing the insert mode to work properly. The “Insert Mode” is a mode that works like the usual input we are accustomed to nowadays, by “displacing” letters. In the Mainframe environments, with limited input sizes, the usual mode is the “overwrite mode”, which replaces the letters gradually as you write them.