This should get you set GitHub - jp0550/smartthings at hubitat
The key for the dropdown fix is below
def options = [:]
state.devicesMap.each {
options[it.key] = it.value
}
input "selectedDevices", "enum", required:false, title:"Select Cast Device ("+ state.devicesMap.size() +" found)", multiple:true, options: options
@mike.maxwell The best I can figure is that the options dropdown doesn't like to take a map straight from the state (maybe due to the deserialization process). Recreating it solves the issue.
Other hubitat patches to make the rest work are in the repo above. I didn't touch the group sync app code though.
