If you forget your password it can be reset using the Password reset service. It requires that you have a SUPR id and that your account at HPC2N is connected to your SUPR id.
When i am trying to reset my password I am getting this error message.
Your user account has been deactivated at HPC2N. Please contact firstname.lastname@example.org to reactivate your user account. Include your username at HPC2N in the mail.
This means you are not currently a member of a project. You either need to apply for one or have your PI add you to a project. You can find more information about this here: Apply for HPC resources of a new project.