You set the password at the moment you launch the ISO. It suppose to ask you for a username/password before launching the lxdm login manager
Must be an issue with the language, it fails and bypass all the rest of the configuration. Which language did you choose ?
I confirm and found the bug, will be fix in 11.4 Thank you for trying.Please use United State for example
sudo sed -i "s@Brasil@Brazil@" /sbin/setup-nutyxsudo setup-nutyx -cl
sudo cards upgrade