My SmartStart list populated all of the SmartStart capable devices added previously (most added the classic way), but the one device I was able to add with SmartStart in the last beta version has never, and still doesn’t show. When I added that device, it included but I never got the Security (S2) screen. It included with S2 automatically, no opportunity to choose not to use security.
Going from memory, LR requires SmartStart and S2 as part of SiLab's spec.
I have a single LR device that I have not even taken out of the box. SmartStart is the hurdle for me because I've never even considered using the Mobile App thus far in my Hubitat life. 
2 Likes
