Do I have to register my LTE router (DataRemote CDS-9070) with ATT to use it?

I'm going to move this post to the Wireless forum where people familiar with these devices should be able to help.

Oh my bad, I should of done that in the first place lol, thanks for moving it for me

We want to help shed some light on why you may be receiving this registration error, @Ben_S. 

Possible causes for this error include: 

• Your device's operating system is out of date. 
• Your SIM card isn't compatible with your device. 
• Your device isn't supported.

Please keep in mind that if your device isn't on either one of our lists of compatible devices, then it won't work on the AT&T network. 

• AT&T branded devices. 
• Non-AT&T branded devices. 

Thanks for reaching out to our AT&T Community! Let us know how this information helps. 

Sydne, AT&T Community Specialist