Hello @David16DA, thank you for the post.
When Amazon Alexa responds but doesn’t go through the command, that usually means that the Sonos speakers have lost connection to the Amazon Alexa cloud.
You can refresh the connection by following the below instructions:
Re-enable the Sonos skill
Open the Alexa app and tap on the More menu in the bottom right. Tap on Skills & Games > Your Skills > Sonos > Disable Skill. Once disabled, tap on Enable Skill.
If this doesn’t work, have a look on our Support Article Alexa commands not working on Sonos for further troubleshooting steps.
If you are struggling with any of the steps, feel free to reach out to our Support team, as they can guide you through getting Amazon Alexa back on your Sonos.
I hope this helps.