The following happened a few times to me already: after closing the door, I rapidly turn the lock to a partially or fully locked position (not sure of that one because I did it rapidly). After that, the lock is unusable. The visible symptom is: on button press, it tries to lock the door which is already locked. I recalibrated to solve this.
The rapid movement, I do it by letting my hand and arm pas on top of the lock. It is as if the lock was rolling under my hand and arm. It is a really swift movement.
Oh, BTW, it would be nice to avoid those greyish fonts in the app as they make the text difficult to read, at least to me.