I'm sorry for the delay. It looks like your deadbolt isn’t calibrated. When you’re installing your lock, the Nest app will have you check the deadbolt’s calibration. Your door needs to be closed during this step. If your door was open, your lock may not be able to properly calibrate.
Without accurate calibration, the Nest app may say that your door’s locked when it’s not, or vice versa.
Here are some troubleshooting steps to try:
If it feels like the deadbolt is sticking or scraping at any point, or if it feels like the deadbolt isn’t able to fully extend when your door’s closed, you may need to make some adjustments.