What happened to Lutron integration on smartthings? , I can’t find it.
When they updated it several months ago they made it region specific. Which region is your samsung account in?
Latam, Dominican Republic specifically
That could be the issue 
. The Lutron Caseta integration is only available in USA, Canada and Mexico.
Wow, I have been using it since 2018, now I can’t. Smartthings is pushing me to leave the platform. Thanks man!!
Unfortunately when they switched from the Groovy integration to Schema integration at the beginning of August they implemented the region restrictions. Did you already have Caseta setup? If so, you may be able to find your old integration under Settings > Linked Services and udpate new devices that way.