Smart WiFi Door Lock

The lock is correctly installed on the front door.

App is correctly installed.
I go to pair to Bluetooth it asks for a password.
There is NO password provided.

After 9 attempts a password appeared within a millisecond it disappeared!
The wifi in the home is near the door. Am I supposed to connect the door to the home wifi - how are you supposed to do that?

Is there something else I’m supposed to do.

Currently I’ve spent 1K on Eufy products and this is the first component to set up. Not feeling confident.