Activated Auto lock/Unlock.
Have the same problems as the others, sometimes it works but most of time it does not work.
When it does not work it looks like it is a problem of communicating with lock.
Tried to open the lock through the app but that also did not work, despite several attempts.
So I opened the lock with my key.
The worrying part is that after a delay of half an hour or so, the attempts of me through the app came through and the door unlocked several times!!
This is actually a security risk and not acceptable for a lock! Looks like commands that not get through to the lock are queued and executed on later time when communication with Nuki WEB (?) is restored resulting in unlock of the lock (in my case).
Hope you can solve these problems, because they are very serious security issues.