The sensor pack has a few components, but preparing the applicator is easy. Feel free to go through the whole in-app guide first, and only apply the sensor on the 2nd go.
Unscrew the applicator. Peel off the lid from the sensor. Ensure the line in the applicator aligns with the line in the sensor packet, and press it in. The sensor is not attached and ready to be inserted.
If you feel unsure about something, get in touch with our team - we'll be happy to help!