SIM7000 - Serial interface getting "Faile to set baud rate" using example code [2nd attempt]

I'm using the example code from the Wiki here: https://wiki.dfrobot.com/SIM7000_Arduino_NB-IoT_LTE_GPRS_Expansion_Shield_SKU__DFR0505_DFR0572

and it's not able to set the baud rate. 

The error message is “Faile to set baud rate” (sic)

I've followed the HW & SW requirements exact and used the example code without modification.

Do I have a faulty device, or am I missing something? 

Attached screenshot of Adruino IDE with code and Serial Monitor panels 

Thanks!