It means your transmitter is not snapped properly. Try to ensure the transmitter is properly snapped. And check if you'll receive the same prompts again.
If you get the system message "System Recovering please wait" (Label: R01) after warm-up phase, please wait up to 3 hours. If the issue persists, replace the sensor and start a new session.
*Note: Please keep the Glunovo App running in the background and pay close attention to any system messages. If the issue of improper attachment is not resolved during the 120-minute warm-up period, the system will terminate the current session in 121 minutes and prompt you to start a new sensor.