We recently received an Echo Auto. We have a premium student Spotify account. I was able to connect my phone to the Echo Auto just fine and use it with Spotify. However, when I connected my wife's phone and try to use Spotify, Alexa says, "I can't play Spotify on that device." It's connected to the same Amazon and Spotify accounts. I know we can't play both at the same time, but my phone was disconnected when I was trying to use Spotify with her phone. Any thoughts on the problem or solution?