Using LBR20 with USMOBILE SUPER LTE?

I'm trying to use the LBR20 with a SUPER LTE sim card from usmobile. When I try to set up with the orbi app it checks the sim card and says SIM Registered then when checking the LTE it says failed to connect to mobile netrwork and asks me to manually input APN settings. I've tried this over and over but it still won't connect. I also tried a working cricket sim card fom my phone and it does the same thing. Any help would be appreciated. Thanks

James