Your password on Magi has some requirements :
Moreover there is a usage policy :
When you asked for a Magi account, you received an email in your inbox with your login and password.
As soon as you received this message, you can log on Magi (connect to the frontend) and you will get the following screen :
You can see the quote “WARNING, your password has expired”. You must enter the password received by mail (this is your initial password). Then, you enter the new password two times. Your new password must match the complexity policy.