I was very excited to get this lock and had waited a long time for a sale.  The first thing I noticed was a metal on metal grating sound that set my teeth on edge when locking and unlocking it.  I contacted support and was asked to provide a video, then was told that's normal.  A couple days later the lock engaged then wouldn't unlock, manually or via the app.  I contacted support and was told it probably needed to be recalibrated.  I uninstalled it and put it in the box and asked to return it.  Support wanted to troubleshoot further with me, but upon my insistance gave me the info to return it, but it appears I have to pay return shipping.  All around this turned out to be a big disappointment and hassle.