Assistance with GSM (SIM800L)

Greetings everyone,
I'm new around here ... Recently I picked up an SIM800L GSM module I wish to use for a remote alarm system for power outages. I'm using Truphone as the provider with a prepaid Micro SIM card. Currently, I have not successfully received or sent an SMS message. I'm a bit lost at the moment with it and I'd appreciate if anyone could push me in the right direction?

The module has a steady red light on the right. Just left to it, there is another LED that blinks a little bit faster than once per second. This does not change when sending etc.

I do have a 4-digit pin that I was forced to set for the SIM card. I do not know if this is a factor or not. I have not found many resources regarding specifying the pin for the modem. Given the output of the code below, it appears to be connected to the T-Mobile network?

Many thanks,

AT

OK
AT+CPIN?

ERROR
AT+COPS=?

+COPS: (2,"T-Mobile USA","TMO","310260"),,(0-4),(0-2)

OK
AT+COPS

ERROR
AT+COPS=?

+COPS: (2,"T-Mobile USA","TMO","310260"),,(0-4),(0-2)

OK
AT+COPS?

+COPS: 0

OK
AT+CPIN?

ERROR
AT+CPIN=?

OK
AT+CPIN?

ERROR
AT+CPIN="9896"

ERROR
AT+CFUN?

+CFUN: 1

OK
AT+CREG?

+CREG: 0,0

OK
AT+CREG=?

+CREG: (0-2)

OK
AT+CREG=1

OK
AT+CREG=?

+CREG: (0-2)

OK
AT+CREG?

+CREG: 1,0

OK
AT+COPS?

+COPS: 0

OK
AT+COPS=?

+COPS: (2,"T-Mobile USA","TMO","310260"),,(0-4),(0-2)

OK

Module:

Such commands are not working...

AT+CPIN?

+CME ERROR: SIM not inserted
AT+CPIN=?

OK

AT+CMGL?

ERROR
AT+CMGL

ERROR
AT+CMGF=1

ERROR
AT+CMGF?

ERROR
AT+CMGF=?

ERROR
AT+CSCS="GSM"

ERROR
AT+CSCS=?

ERROR
AT+CSCS?

ERROR
AT+CMGR=?

ERROR