Well I just joined the whole ST thing and I feel your (other frustrated users) pain!
In a way I was completely mislead (you could say) by the manufacturer of my Keyfree Connected "Smart" Lock (Yale/AssaAbloy) who claimed that it's compatible with leading smart home systems like ST and that:
"You choose how you want to open your door. 4-10 Digit PIN Code, Key Card, Key Tag, Remote Fob and even from your Smartphone when connected to a Smart Home System. It is also easy to add and remove users if you need to" *
... providing the appropriate Z-Wave module is fitted.
So I went ahead and bought the Yale keyfree "smart" lock, the Samsung ST hub and the necessary Z-Wave module to communicate to the hub (at almost twice the price of Yale own module I might add) and once again I have no idea why I keep on putting my trust in all these respectable companies without doing tonnes tedious research beforehand.
After trawling through various discussions on here and getting up to speed with all the "in progress" developments that only add to my fustration, I am wondering why the manufacturer was allowed to make these rather bold claims about their product working with ST (especially missleading bit about "... easy to add and remove users.") without the Samsung team having some serious words! It's all very mind boggling if you ask me.
Now I am stuck with these products and my best chance seems to be a community developed SmartApp which was discorraged from further development a while ago on the basis a native app was in the making which has yet to materialise ... and what am I supposed to feel greatful for this? Not good enough!
Samsung, the ST team and Yale/AssaAbloy really need to pull their fingers out and sort this mess out!