Hello! It sounds like a frustrating situation, especially after having it work smoothly before. The issue could stem from a few different places: sometimes Alexa’s skills can be a bit finicky, and updates to either the Alexa app or the Arduino Skill might have caused the voice command functionality to stop working. It’s also possible there’s a minor configuration issue on the user side.
A good first step would be to unlink and then re-link the Arduino Skill in the Alexa app to see if that resolves the issue. If that doesn’t work, checking with the Arduino community or support might help—they may have encountered similar issues. As a pool builder, I know the importance of having reliable tools to monitor and manage a pool, so I can imagine how vital it is for you to get this working again. Hopefully, a quick fix is all it takes. Good luck!