I have deleted ALL my sensors on the Almond+. I have set them up from scratch, I have stopped Andorid App, deleted Cache and data for app, and reinstalled app. Even after this I still see the old sensors in the app (along with the new ones). The old sensors say 'Could not retrieve sensors data'. next to them.
On the Almond+ itself it only shows the new sensors I have added, the old ones are not anywhere on it that still show up in the app.
Suggestions to make the app forget removed sensors?