DW10e-900 external contact on 2gig Edge Panel

I am trying to install a DW10e-900 sensor using the external contact into my 2gig Edge Panel.

When it is setup as an E+ sensor, the option to change the sensor to Loop 1 is non-existent, the only option is Loop 2.

Currently, the sensors show no response to the external input.

Any ideas what I am dong wrong?