If your Echo device is having trouble playing Spotify, there are several steps you can take to address the issue. Start by ensuring both the Echo and your mobile device (if using Spotify Connect) are connected to the same Wi-Fi network. Check if the Spotify account you're using is properly linked to your Amazon Echo in the Alexa app settings. Confirm that your Spotify subscription is active and in good standing. Try restarting the Echo device, and if the problem persists, log out and log back into your Spotify account within the Alexa app. If all else fails, consider disabling and re-enabling the Spotify skill in the Alexa app or contacting Amazon support for more assistance.