How do I remove a registered product from my assus account

[DJK-nz]

I have two products against my account. One N6Jv laptop serial number A3NOAS496104121 which is no longer working and one laptop S5507QA serial number S5NOKD006789225 which was returned to the shop because it was an ex demo unit and not new. 

[Falcon_ASUS]

@DJK-nz 
I have sent you a message, please check it.
Thank you.