Turn the thumbturn to lock and unlock once. This will reset the auto lock function.
If auto update is enabled for App store or Google Play store, the app will update automatically. Otherwise, you will need to check App Store or Google Play store and follow the instructions to update the app.
Check the app setting to see if Auto-Lock is set to “Manual”. Change it to one of the other selections. If lock still does not auto-lock, check the distance between door magnet and door sensor. Make sure the distance in between is less than 1/2 inch.