I am having the hardest problem figuring out/ searching and finding out why my RBSXTR / R11e-LTE-US is not picking up LTE signal. SIM card is in, powered on, but when searching for LTE signal it say Modem is not configured. I have searched high and low and just can't see to get the answer it / I need. I am attempting to use this device at my house with my current SIM card to pass LTE signal into a Unifi USG. Any help or at least a push in the right direction would be appreciated.