Hello there. Thank you for raising this issue. The first step is to open the Alexa App and remove the Sonos Skill and then re-Enable. If that doesn’t work, please
see this thread here. Failing all of that, please
submit a diagnostic and respond with the confirmation number. This way we can identify the cause. Please let us know how you get on. Many thanks in advance.
Thanks a lot for the tip, removing and re-installing the skill solved the issue.