SmartThings iOS App and the Sonos Play:5

HI All,

I’ve been searching for hours for a fix, but no matter what I can’t seem to link my Sonos Play:5 to the SmartThings iOS app (previously connected to Siri’s ‘Home’ iOS app with ease). The Play:5 is being used wirelessly and is up to date yet the speaker never shows up when I try to search for available devices. I’ve tried restarting my phone and the speaker. Is there a particular trick to this?

Thanks in advance.