Called Samsung today for some Smarthings support on adding some Ring devices and questions about the SmartThings functionality and their support was horrific. The woman I spoke to barely knew there were two apps for SmartThings let alone the differences between them.
If I knew Samsung was going to destroy SmartThings customer service I would have ditched this platform entirely ages ago.
There are 2 support numbers, one is for anything Samsung and the other is SmartThings specific. You will most likely have better luck with the second one:
1-800-726-7864 is Samsung’s main support number in the US.
1-855-238-7339 is a number specific to SmartThings and ADT.