travelsim

You'd need to find that on the travelsim site. Its specific to their service. 

You might get more help, and find earlier questions and answers specific to your device, in the appropriate section for your hardware. That's probably here:

Mobile Routers, Hotspots & Modems

Those things are very different from the standard Netgear routers covered in this section.

I will ask the Netgear moderator to move your message.

In the meantime you could visit the support pages:

Support | NETGEAR

Feed in your model number and check the documentation for your hardware. Look at the label on the device for the model number.

You may have done this already. I can't tell from your message.

I mention it because Netgear stopped supplying printed manuals and CD versions some years ago and people sometimes miss the downloads.