Nighthawk MR1100 showing Mobile Broadband Disconnected (Nomad Verizon)

Our router was working perfectly with Verizon service until a couple of days ago when it gives error messages saying "Mobile Broadband Disconnected" and "Roaming Data Disabled". 

I have contacted Nomad (ISP) and they state that the SIM is functioning properly. Signal strength says excellent, and my devices are able to connect to the router, but not access internet.

I have tried factory resetting the device without success. 

Firmware version: NTG9X50C_12.06.39.00

ANP: vzwinternet

Band Region: Auto (I have tried changing it to LET All without success)

I can not confirm the SIM in my phone because it isn't compatible with Verizon.