The ONLY reason why I have decided to purchase August smart lock pro was for the auto unlock feature as my hands are always full upon return home. It has always given me some trouble, but feature doesn't work since December. And even worse - upon my return home after I manually have to unlock, it will sometimes unlock 15-45min later & notification "welcome back...". I have reported issues so many times and tried every troubleshooting that has been suggested.This is an expensive lock not to work