Is this a new module? Looks like your panel is reporting that it is on firmware 3.2.0.
For the AT&T LTE module, 3.2.3 is required, per 2GIG.
Try updating the firmware to at least 3.2.3 (instructions and links here) then test connectivity again.
Is this a new module? Looks like your panel is reporting that it is on firmware 3.2.0.
For the AT&T LTE module, 3.2.3 is required, per 2GIG.
Try updating the firmware to at least 3.2.3 (instructions and links here) then test connectivity again.