Could not open dev/ttyUSB2

Hi All,

I’m working on setting up my Telit Module, following the instructions here.

lsusb and ttyUSB* checks were as expected

When I ran the AT#USBCFG=4 command, I received a pop-up indicating:
“Could not open /dev/ttyUSB2”

I attempted to proceed to the AT+CGDCONT=1,"IP","super" line, “” in my case, but this responded with an error.

I tried going back and running at root, but now I receive errors for AT#USBCFG=4 and AT#USBCFG=0.

If you cant tell, I have no idea what I am doing and would appreciate any assistance.