Hi @huhao1987 , thanks for providing the account details via PM.
I have checked your account and NBN classified your address as service class 34. Meaning the address has been connected to NBN network before and should have an existing NCD.
If you can't find the NCD, we'll raise your concern to our Provisioning Team and a Case Manager will be in touch to further discuss the matter.
Kindly await further updates within 24 hours.
Thanks for the details. You can leave the Huawei HG659 connected to the NCD while we make a follow up with our Provisioning Team regarding the service activation. You will be contacted by the Case Manager for any additional updates.