Try with the different Baud rates like 9600, 115200.
Under PC Settings the set Baud - 9600, Flow Control - NONE, Data Bits - 8, Parity - NONE, Stop Bits -1 and then perform Test/Query, try this several times, and go to the Modem Configuration tab and click “Restore”, it will restore the module to defaults.
Or, reprogram the module with correct Modem and Function set and try again.