I am experiencing the same issue on my Z-wave Weiser smartcode lock. I had it for almost 2 years now and when I initially set it up with my A3 it worked perfectly fine for quite a long time. But when the battery started to deplete I can't control it anymore from Almond app even though it still works manually. After I replaced its batteries it will only work for a couple of days or less than a week and I had to unpair and pair the lock again because just replacing the batteries won't update the battery status in the Almond (even after touching the battery icon in LCD UI). I replaced its batteries the 2nd time a couple of months ago and I think it only worked with Almonds for a couple of days.