That definitely looks like a cool in wall controller. It looks like he has 5 button actions that can be supported with the supported button values listed in the capabilities documentation- https://smartthings.developer.samsung.com/docs/api-ref/capabilities.html
The problem with this remotech ZRC90 though is it has 8 buttons, with 3 actions a piece, for a total of 24 total button actions. The current supported button list has 22, which would handle most of those but require mapping to the values that might not make sense, and would miss 2 possibilities.
So, since this controller can do so many actions, the current way the app is structured where each device can only have one button, with 22 different actions, falls short of fully supporting it.
This ZRC90 is a bit of an oddball scenario, and there aren’t that many devices capable of so many button actions. But the changes to the way buttons work in the new app has had ripple effects over multiple devices and controllers. Most of the ones I’ve updated have been because of these button issues. Everything pretty much relies on a workaround of some sort. We’ve talked about it on a few other threads here NEW: Tuya ZigBee Smart Battery Switch - #10 by mwav3 here [OBSOLETE] HomeSeer Dimmer and Switch (HS-WD100+ / HS-WS100+) Device Handlers - #179 by mwav3 and here Home Automation mostly broken - #8 by luyer