Just installed Orbit rain sensor. It shows Rain sensor on Constantly

I installed this sensor based on this guide on the Rachio site.

The sensor appears to work when I test it (light come on on the receiver and shut off when I stop the test) however in the Rachio app it is constantly on. I had the sensor in the house for a while before installing it outside and now it is outside and still shows on. The receiver is not showing it is on so it should not be on in the app.

App history shows it activated and stayed that way. If I disable the sensor in the app it shows deactivated in the history until I re enable it.

Any ideas?