The radio is jammed up, you need to do the shut down pull power for 30 seconds dance to restart the zwave radio.
Make sure the device is powered off and just scan the code and leave the defaults. The defaults are embedded in the QR code and the recommended settings from the manufacturer. All of mine seem to use "SmartStart Boot Mode".
The only thing I ever have changed is the security options (grant keys) after scanning, if I dont want to include as S2. But for a door lock if you change that it will refuse to pair without security.
Once its all set how you want it then power up the device.