Mine still working fine. A year or more ago I had similar weirdness. Z-wave exclude and re-include, setup smartapps again, and all has been well since.
I was unable to exclude on the ZRTSI (V01 EXCLUDE FAIL). ZRTSI is two feet from the SmartThings hub. I’ve tried while in exclusion mode in SmartThings and I was able to force remove within the SmartThings interface. How do I force remove a virtual node in the ZRTSI without resetting the and losing everything?
Somfy z wave to RTS controller instruction does not provide very good detail. If they can make video instruction and teach us between Somfy RTS to z-wave controller and z-wave controller to Samsung SmartThings app, I think it will let user easy to understand.