Just got it in yesterday and did my sim install activation all online this morning with my main computer hooked through the LB1120 and my backup computer hooked to the WG3526. I set the WG3526 apn to: ndo and it connected At first it was 3G until I set 4G only in the settings.
The initial results look good on the supplied antennas although not as good as the netgear with the outdoor ones. I have now connected it to the outdoor antennas and was a definite improvement noticeable in upload appreciably. Now I just will monitor this to see how stable it is.

I am running the latest Rooter 2020-12-16 on the router