@Mr6510 Hi! This is a known issue on the home assistant side. I have a fix in progress but it's not ready yet. You should be able to work around it by not sending values too frequently until the entity is added to home assistant, if you only have one value type. https://github.com/home-assistant/home-assistant/issues/8243 gieljnssns created this issue in home-assistant/home-assistant closed MySensor errors #8243