No IMEI listed on WAN Connection Status

I have a transit duo. When I click on details for cellular 1, there is no IMEI or Network Mode listed in the WAN Connection Status like there is for cellular 2.

The ultimate problem is that no connection is being made with the Verizon sim card I have installed in cellular 1A, no other cards installed at this time. I’ve tried upgrading the firmware, now on version 8.1.2. Initially after upgrading the firmware from 8.0.2, I was unable to save changes for cellular 1 WAN Connection Settings (would be a unrelated error to the change I made). After doing a factor reset, I can make changes but the IMEI and Network Mode info are still not showing up.