LTE AddOn - Verizon

Has anyone been able to get the LTE AddOn to work on Verizon? It says it's certified to work, and when we spoke with Verizon they can see the IEMI changed to the correct IEMI. (We had to use a generic one to register, as the normal one errored out). The plan it's associated with supposedly has data and text enabled. After a while the screen errors out saying "Network Registration Failed"

If Verizon has authorized it, it should work.

See https://infrasensing.com/sensors/addon-lte.asp

Verizon is not on the list of carriers

But if you go to the Datasheet on the same page, it says it is.

http://documents.serverscheck.com/datasheets/Datasheet_ADDON-LTE_3.pdf