{ en_us.root.errors.error-sensor-already-in-use.free-style-libre-app.free-style-libre-3-plus-sensor }
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What it may mean

The sensor was started by another device.

What you can do

Both the reader and app can only be used with a sensor that it started. Scan the sensor again with the device that started it or apply and start a new sensor.

Are you able to successfully scan your sensor and get a reading?

If you still need help, we are available:

7 days a week 8 AM to 8 PM Eastern Time, excluding holidays.

Call us at 855-632-8658