To know the if you have a legacy or an igloochip lock, please check this article!

Legacy locks: 

You have to edit the PIN on the lock itself but it needs to be used once

igloochip locks:

When you are in Bluetooth range, you can customize the PINs upon creation making it easier to manage. Once generated, it can’t be edited.

Article Number:IHAPP1118
File Type:General Public (GP)