Local password Zyxel , which manager by NCC

 https://support.zyxel.eu/hc/en-us/articles/360016720320-Nebula-Credentials-What-is-the-username-password-I-can-use-to-access-my-Nebula-device-?zarsrc=30&utm_source=zalo&utm_medium=zalo&utm_campaign=zalo&gidzl=NgYFR2rutWbKiOrlB6BP2LcyWc4sRz5J5Rg6Pcrjq0L9kOKtC6ZJ0actrsDiCuq07kVUPZH1vs9GB7_S3G

What is the username/password I can use to access my Nebula device?

If your Nebula device has never been online on NCC before or you do the factory reset on your Nebula device, the username/password is admin/1234.

If your Nebula device is online on NCC and the configuration status is "up to date" the username and password will be replaced by NCC configuration. 

Go to Site-wide -> Configure -> Site settings