"Here is Spotify on Sonos. Sorry on Sonos is offline."

[gsbryant]

I have an Echo Dot and two Sonos Play:1s, all registered to me, my apps and my phone, all online, same wifi, etc. I have a 'Living Room' group in Alexa.app with "Kitchen Echo Dot" and "Sonos" in it. Sonos is set as default music speaker in Alexa.app and the Sonos Skill is enabled.

The problem is when I say "Alexa Play Spotify" I get "Here is Spotify on Sonos. Sorry on Sonos is offline." I can play Spotify on the Sonos using Spotify Connect or the Sonos app, but can't get Alexa to control it. Help?

Plan: Premium

Country: USA

Device: iPhone 8, Macbook '13

Operating System: iOS 10, MacOS