General questions for AT cmds

Hi :slight_smile:
Yesterday I got my first SODAQ SFF board. I want to use it with the sim in Germany in the NB-IoT network.

Today I was able to connect to the telekom network using some AT cmds. I’m now curious if need these cmds during every setup to set the modem to my settings?

Commands I used to get a connection:

Best regards,

Now, out of the sudden the device get’s nor recognized by my computer anymore.
Any idea what could be wrong?