Go to Configuration>Licensing>Registration> Click portal.myzyxel.com
Login to myzyxel.com, the press submit
Then the device will belong in your account
All Replies
If the device on your hand, check below steps which can lead you to register your device on indicated account.
Go to Configuration>Licensing>Registration> Click portal.myzyxel.com
Login to myzyxel.com, the press submit
Then the device will belong in your account

Charlie