Hi Nick,
Please find the below steps to connect your sensor to the pixie timer:
1. in the app, switch to the Pixie timer2. press the + button on the right upper corner
3. choose sensor
4. follow the steps. Do not choose the standalone mode but the first one "garden"
Please let us know if it works.
Thanks,
Netro Support
Glad to hear it works now. For the standalone sensor, we have deleted it for you from our server side.
Thanks,
Netro Support