[Freesurfer] password for VirtualBox

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Hi!I wanted to try out FreeSurfer and followed the install guide from the FreeSurfer webpage with the linkedUbuntu 18 virtual disk image (FStutorial_clone_2.7z, downloaded 2020-12-14).However, upon startup of the virtual machine, the Ubuntu installation asks me for my user credentials with a preselected "developer" user (seescreenshot attached). According to the install guide, the virtual machine should just boot up to Desktop without requiring a password.Is there a default password I am supposed to use (I tried leaving the password field blank, "freesurfer", "FreeSurfer", "developer" but none of those worked)

Thank you in advance,

Miguel